don't export category info to bubble charts, tdf#103988

Change-Id: Ic2ecd959841172db3f4016b4a1ba667238c6c508
Reviewed-on: https://gerrit.libreoffice.org/46749Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
(cherry picked from commit 1252f324)
Reviewed-on: https://gerrit.libreoffice.org/46803

oox/source/export/chartexport.cxx

@@ -1975,7 +1975,7 @@ void ChartExport::exportSeries( const Reference<chart2::XChartType>& xChartType,
                     }
 
                     // export categories
-                    if( eChartType != chart::TYPEID_SCATTER && mxCategoriesValues.is() )
+                    if( eChartType != chart::TYPEID_SCATTER && eChartType != chart::TYPEID_BUBBLE && mxCategoriesValues.is() )
                         exportSeriesCategory( mxCategoriesValues );
 
                     if( (eChartType == chart::TYPEID_SCATTER)