ofz: solveCrossovers performance is abysmal on large polygons

just give up on it for fuzzing purposes

Change-Id: I8d91fa547d83bc2f28454812280b0a7054e05b62
Reviewed-on: https://gerrit.libreoffice.org/48835Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

emfio/source/reader/mtftools.cxx

@@ -924,7 +924,7 @@ namespace emfio
 
     void MtfTools::UpdateClipRegion()
     {
-        if ( mbClipNeedsUpdate )
+        if (mbClipNeedsUpdate && !utl::ConfigManager::IsFuzzing())
         {
             mbClipNeedsUpdate = false;
             mbComplexClip = false;

svx/source/svdraw/svdobj.cxx

@@ -49,6 +49,7 @@
 #include <tools/diagnose_ex.h>
 #include <tools/helpers.hxx>
 #include <tools/line.hxx>
+#include <unotools/configmgr.hxx>
 #include <vcl/graphictools.hxx>
 #include <vcl/metaact.hxx>
 #include <vcl/virdev.hxx>
@@ -2369,7 +2370,7 @@ SdrObject* SdrObject::ImpConvertToContourObj(SdrObject* pRet, bool bForceLineDas
             }
 
             // check for fill rsults
-            if(!aExtractedLineFills.empty())
+            if (!aExtractedLineFills.empty() && !utl::ConfigManager::IsFuzzing())
             {
                 // merge to a single tools::PolyPolygon (OR)
                 aMergedLineFillPolyPolygon = basegfx::utils::mergeToSinglePolyPolygon(aExtractedLineFills);