fdo#45724 fix WW8 export of textbox default background color

regression from 5609c512

Change-Id: I5f3ce73943b2805b7de1ae41699e605af9086b15

oox/inc/oox/ole/axcontrol.hxx

@@ -219,7 +219,8 @@ public:
     void                convertToMSColor(
                             PropertySet& rPropSet,
                             sal_Int32 nPropId,
-                            sal_uInt32& nOleColor ) const;
+                            sal_uInt32& nOleColor,
+                            sal_uInt32 nDefault = 0 ) const;
 
 
     /** Converts the passed StdPic picture stream to UNO properties. */

oox/source/ole/axcontrol.cxx

@@ -273,11 +273,13 @@ void ControlConverter::convertColor( PropertyMap& rPropMap, sal_Int32 nPropId, s
     rPropMap.setProperty( nPropId, OleHelper::decodeOleColor( mrGraphicHelper, nOleColor, mbDefaultColorBgr ) );
 }
 
-void ControlConverter::convertToMSColor( PropertySet& rPropSet, sal_Int32 nPropId, sal_uInt32& nOleColor ) const
+void ControlConverter::convertToMSColor( PropertySet& rPropSet, sal_Int32 nPropId, sal_uInt32& nOleColor, sal_uInt32 nDefault ) const
 {
     sal_uInt32 nRGB = 0;
-    rPropSet.getProperty( nRGB, nPropId );
-    nOleColor = OleHelper::encodeOleColor( nRGB );
+    if (rPropSet.getProperty( nRGB, nPropId ))
+        nOleColor = OleHelper::encodeOleColor( nRGB );
+    else
+        nOleColor = nDefault;
 }
 void ControlConverter::convertPicture( PropertyMap& rPropMap, const StreamDataSequence& rPicData ) const
 {
@@ -1717,7 +1719,7 @@ void AxTextBoxModel::convertFromProperties( PropertySet& rPropSet, const Control
     if ( rPropSet.getProperty( bRes,  PROP_VScroll ) )
         setFlag( mnScrollBars, AX_SCROLLBAR_VERTICAL, bRes );
 
-    rConv.convertToMSColor( rPropSet, PROP_BackgroundColor, mnBackColor );
+    rConv.convertToMSColor( rPropSet, PROP_BackgroundColor, mnBackColor, 0x80000005L );
 
     rConv.convertToAxBorder( rPropSet, mnBorderColor, mnBorderStyle, mnSpecialEffect );
     AxMorphDataModelBase::convertFromProperties( rPropSet, rConv );

sw/source/filter/ww8/wrtw8esh.cxx

@@ -1648,6 +1648,8 @@ void SwBasicEscherEx::WriteBrushAttr(const SvxBrushItem &rBrush,
 bool lcl_isInHeader(const SwFrmFmt& rFmt)
 {
     const SwFlyFrmFmt* pFlyFrmFmt = dynamic_cast<const SwFlyFrmFmt*>(&rFmt);
+    if (!pFlyFrmFmt)
+        return false;
     SwFlyFrm* pFlyFrm = const_cast<SwFlyFrm*>(pFlyFrmFmt->GetFrm());
     SwPageFrm* pPageFrm = pFlyFrm->FindPageFrmOfAnchor();
     SwFrm* pHeader = pPageFrm->Lower();