crashtesting: infinite recurse with moz609361-1.svg

Change-Id: I18c2dd159dd7a64c3627abdb472d65013453b1b9
Reviewed-on: https://gerrit.libreoffice.org/57891Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svgio/inc/svgstyleattributes.hxx

@@ -231,6 +231,7 @@ namespace svgio
             BaselineShift               maBaselineShift;
             SvgNumber                   maBaselineShiftNumber;
 
+            mutable bool                mbResolvingParent;
 
             // defines if this attributes are part of a ClipPath. If yes,
             // rough geometry will be created on decomposition by patching