Fix: If another DataTable was initialised while an async load action was occurring for the state of another table, a Javascript error would occur

- This was due to checking of parameters which had not yet been initialised
- Scrolling is only setup later, so this check for the header being present is safe
- Thread https://datatables.net/forums/discussion/comment/130261

.datatables-commit-sync

@@ -1 +1 @@
-89db70cdb8de0687958c80e2349f8087ae38cf6e
+9c3e8eaa7935eaa5f46f05714ceb6bf2998328f8

media/js/jquery.dataTables.js

@@ -909,8 +909,11 @@
 				var s = allSettings[i];
 			
 				/* Base check on table node */
-				if ( s.nTable == this || s.nTHead.parentNode == this || (s.nTFoot && s.nTFoot.parentNode == this) )
-				{
+				if (
+					s.nTable == this ||
+					(s.nTHead && s.nTHead.parentNode == this) ||
+					(s.nTFoot && s.nTFoot.parentNode == this)
+				) {
 					var bRetrieve = oInit.bRetrieve !== undefined ? oInit.bRetrieve : defaults.bRetrieve;
 					var bDestroy = oInit.bDestroy !== undefined ? oInit.bDestroy : defaults.bDestroy;
 			

media/js/jquery.dataTables.min.js

@@ -81,7 +81,7 @@ b,c){var d=this.api(!0),a=d.rows(a),e=a.settings()[0],h=e.aoData[a[0][0]];a.remo
 c.row(a).data()||null}return c.data().toArray()};this.fnGetNodes=function(a){var b=this.api(!0);return a!==k?b.row(a).node():b.rows().nodes().flatten().toArray()};this.fnGetPosition=function(a){var b=this.api(!0),c=a.nodeName.toUpperCase();return"TR"==c?b.row(a).index():"TD"==c||"TH"==c?(a=b.cell(a).index(),[a.row,a.columnVisible,a.column]):null};this.fnIsOpen=function(a){return this.api(!0).row(a).child.isShown()};this.fnOpen=function(a,b,c){return this.api(!0).row(a).child(b,c).show().child()[0]};
 this.fnPageChange=function(a,b){var c=this.api(!0).page(a);(b===k||b)&&c.draw(!1)};this.fnSetColumnVis=function(a,b,c){a=this.api(!0).column(a).visible(b);(c===k||c)&&a.columns.adjust().draw()};this.fnSettings=function(){return ya(this[x.iApiIndex])};this.fnSort=function(a){this.api(!0).order(a).draw()};this.fnSortListener=function(a,b,c){this.api(!0).order.listener(a,b,c)};this.fnUpdate=function(a,b,c,d,e){var h=this.api(!0);c===k||null===c?h.row(b).data(a):h.cell(b,c).data(a);(e===k||e)&&h.columns.adjust();
 (d===k||d)&&h.draw();return 0};this.fnVersionCheck=x.fnVersionCheck;var b=this,c=a===k,d=this.length;c&&(a={});this.oApi=this.internal=x.internal;for(var e in n.ext.internal)e&&(this[e]=Lb(e));this.each(function(){var e={},g=1<d?Xa(e,a,!0):a,j=0,i,e=this.getAttribute("id"),m=!1,l=n.defaults,q=h(this);if("table"!=this.nodeName.toLowerCase())K(null,0,"Non-table node initialisation ("+this.nodeName+")",2);else{eb(l);fb(l.column);J(l,l,!0);J(l.column,l.column,!0);J(l,h.extend(g,q.data()));var t=n.settings,
-j=0;for(i=t.length;j<i;j++){var o=t[j];if(o.nTable==this||o.nTHead.parentNode==this||o.nTFoot&&o.nTFoot.parentNode==this){var s=g.bRetrieve!==k?g.bRetrieve:l.bRetrieve;if(c||s)return o.oInstance;if(g.bDestroy!==k?g.bDestroy:l.bDestroy){o.oInstance.fnDestroy();break}else{K(o,0,"Cannot reinitialise DataTable",3);return}}if(o.sTableId==this.id){t.splice(j,1);break}}if(null===e||""===e)this.id=e="DataTables_Table_"+n.ext._unique++;var p=h.extend(!0,{},n.models.oSettings,{sDestroyWidth:q[0].style.width,
+j=0;for(i=t.length;j<i;j++){var o=t[j];if(o.nTable==this||o.nTHead&&o.nTHead.parentNode==this||o.nTFoot&&o.nTFoot.parentNode==this){var s=g.bRetrieve!==k?g.bRetrieve:l.bRetrieve;if(c||s)return o.oInstance;if(g.bDestroy!==k?g.bDestroy:l.bDestroy){o.oInstance.fnDestroy();break}else{K(o,0,"Cannot reinitialise DataTable",3);return}}if(o.sTableId==this.id){t.splice(j,1);break}}if(null===e||""===e)this.id=e="DataTables_Table_"+n.ext._unique++;var p=h.extend(!0,{},n.models.oSettings,{sDestroyWidth:q[0].style.width,
 sInstance:e,sTableId:e});p.nTable=this;p.oApi=b.internal;p.oInit=g;t.push(p);p.oInstance=1===b.length?b:q.dataTable();eb(g);Ca(g.oLanguage);g.aLengthMenu&&!g.iDisplayLength&&(g.iDisplayLength=h.isArray(g.aLengthMenu[0])?g.aLengthMenu[0][0]:g.aLengthMenu[0]);g=Xa(h.extend(!0,{},l),g);F(p.oFeatures,g,"bPaginate bLengthChange bFilter bSort bSortMulti bInfo bProcessing bAutoWidth bSortClasses bServerSide bDeferRender".split(" "));F(p,g,["asStripeClasses","ajax","fnServerData","fnFormatNumber","sServerMethod",
 "aaSorting","aaSortingFixed","aLengthMenu","sPaginationType","sAjaxSource","sAjaxDataProp","iStateDuration","sDom","bSortCellsTop","iTabIndex","fnStateLoadCallback","fnStateSaveCallback","renderer","searchDelay","rowId",["iCookieDuration","iStateDuration"],["oSearch","oPreviousSearch"],["aoSearchCols","aoPreSearchCols"],["iDisplayLength","_iDisplayLength"]]);F(p.oScroll,g,[["sScrollX","sX"],["sScrollXInner","sXInner"],["sScrollY","sY"],["bScrollCollapse","bCollapse"]]);F(p.oLanguage,g,"fnInfoCallback");
 z(p,"aoDrawCallback",g.fnDrawCallback,"user");z(p,"aoServerParams",g.fnServerParams,"user");z(p,"aoStateSaveParams",g.fnStateSaveParams,"user");z(p,"aoStateLoadParams",g.fnStateLoadParams,"user");z(p,"aoStateLoaded",g.fnStateLoaded,"user");z(p,"aoRowCallback",g.fnRowCallback,"user");z(p,"aoRowCreatedCallback",g.fnCreatedRow,"user");z(p,"aoHeaderCallback",g.fnHeaderCallback,"user");z(p,"aoFooterCallback",g.fnFooterCallback,"user");z(p,"aoInitComplete",g.fnInitComplete,"user");z(p,"aoPreDrawCallback",