making sure pdf pages are correctly layouted

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49303 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/metafile.cpp

@@ -138,7 +138,7 @@ wxMetafileRefData::wxMetafileRefData( int width, int height)
             CGPDFContextBeginPage(m_context, NULL);
         else
 #endif
-            CGContextBeginPage(m_context, NULL);
+            CGContextBeginPage(m_context, &r);
 
         CGColorSpaceRef genericColorSpace  = wxMacGetGenericRGBColorSpace();