WMF: partially revert change as for some documents text is not drawn

revert part of 00e577ac which
causes that the text in some WMF images is not drawn. For example
the document in fdo#56886

Change-Id: I401c702f0567b1f142a82a4417abe719687a86f9

vcl/source/filter/wmf/winmtf.cxx

@@ -460,13 +460,11 @@ void WinMtfOutput::ImplMap( Font& rFont )
 {
     // !!! HACK: we now always set the width to zero because the OS width is interpreted differently;
     // must later be made portable in SV (KA 1996-02-08)
-    Size  aFontSize = rFont.GetSize();
+    Size  aFontSize = ImplMap (rFont.GetSize());
 
     if( aFontSize.Height() < 0 )
         aFontSize.Height() *= -1;
 
-    aFontSize = ImplMap (aFontSize);
-
     rFont.SetSize( aFontSize );
 
     if( ( mnWinExtX * mnWinExtY ) < 0 )