gdiplus: Stub GdipPrivateAddFontFile.

dlls/gdiplus/font.c

@@ -653,3 +653,14 @@ GpStatus WINGDIPAPI GdipDeletePrivateFontCollection(GpFontCollection **fontColle
 
     return NotImplemented;
 }
+
+GpStatus WINGDIPAPI GdipPrivateAddFontFile(GpFontCollection* fontCollection,
+        GDIPCONST WCHAR* filename)
+{
+    FIXME("stub: %p, %s\n", fontCollection, debugstr_w(filename));
+
+    if (!(fontCollection && filename))
+        return InvalidParameter;
+
+    return NotImplemented;
+}

dlls/gdiplus/gdiplus.spec

@@ -464,7 +464,7 @@
 @ stdcall GdipPathIterRewind(ptr)
 @ stub GdipPlayMetafileRecord
 @ stub GdipPlayTSClientRecord
-@ stub GdipPrivateAddFontFile
+@ stdcall GdipPrivateAddFontFile(ptr wstr)
 @ stub GdipPrivateAddMemoryFont
 @ stub GdipRecordMetafile
 @ stub GdipRecordMetafileFileName

include/gdiplusflat.h

@@ -422,6 +422,7 @@ GpStatus WINGDIPAPI GdipGetGenericFontFamilyMonospace(GpFontFamily**);
 
 GpStatus WINGDIPAPI GdipNewPrivateFontCollection(GpFontCollection**);
 GpStatus WINGDIPAPI GdipDeletePrivateFontCollection(GpFontCollection**);
+GpStatus WINGDIPAPI GdipPrivateAddFontFile(GpFontCollection*, GDIPCONST WCHAR*);
 
 GpStatus WINGDIPAPI GdipCreateStringFormat(INT,LANGID,GpStringFormat**);
 GpStatus WINGDIPAPI GdipDeleteStringFormat(GpStringFormat*);