vml import: only apply width-percent attribute if it's != 0

This fixes an issue with a shape defined with these attributes:
mso-width-percent:0;mso-height-percent:0 and
mso-width-relative:page;mso-height-relative:page;
where all points were then located in (0,0)

Change-Id: I51070ad2b2e4e05ab64f16813472ca1d7099fb09
Reviewed-on: https://gerrit.libreoffice.org/775Reviewed-by: Petr Mladek <pmladek@suse.cz>
Tested-by: Petr Mladek <pmladek@suse.cz>

oox/source/vml/vmlshape.cxx

@@ -463,7 +463,9 @@ Reference< XShape > SimpleShape::implConvertAndInsert( const Reference< XShapes
             if ( maTypeModel.maWidthRelative.isEmpty() || maTypeModel.maWidthRelative == "page" )
             {
                 sal_Int16 nWidth = maTypeModel.maWidthPercent.toInt32() / 10;
-                PropertySet( xShape ).setAnyProperty(PROP_RelativeWidth, makeAny( nWidth ) );
+                // Only apply if nWidth != 0
+                if ( nWidth )
+                    PropertySet( xShape ).setAnyProperty(PROP_RelativeWidth, makeAny( nWidth ) );
             }
         }
         if ( !maTypeModel.maHeightPercent.isEmpty( ) )
@@ -472,7 +474,9 @@ Reference< XShape > SimpleShape::implConvertAndInsert( const Reference< XShapes
             if ( maTypeModel.maHeightRelative.isEmpty() || maTypeModel.maHeightRelative == "page" )
             {
                 sal_Int16 nHeight = maTypeModel.maHeightPercent.toInt32() / 10;
-                PropertySet( xShape ).setAnyProperty(PROP_RelativeHeight, makeAny( nHeight ) );
+                // Only apply if nHeight != 0
+                if ( nHeight )
+                    PropertySet( xShape ).setAnyProperty(PROP_RelativeHeight, makeAny( nHeight ) );
             }
         }
     }