gdiplus: Added GdipDeleteStringFormat.

dlls/gdiplus/gdiplus.spec

@@ -149,7 +149,7 @@
 @ stdcall GdipDeletePen(ptr)
 @ stub GdipDeletePrivateFontCollection
 @ stub GdipDeleteRegion
-@ stub GdipDeleteStringFormat
+@ stdcall GdipDeleteStringFormat(ptr)
 @ stdcall GdipDisposeImage(ptr)
 @ stdcall GdipDisposeImageAttributes(ptr)
 @ stdcall GdipDrawArc(ptr ptr long long long long long long)

dlls/gdiplus/stringformat.c

@@ -44,6 +44,16 @@ GpStatus WINGDIPAPI GdipCreateStringFormat(INT attr, LANGID lang,
     return Ok;
 }
 
+GpStatus WINGDIPAPI GdipDeleteStringFormat(GpStringFormat *format)
+{
+    if(!format)
+        return InvalidParameter;
+
+    GdipFree(format);
+
+    return Ok;
+}
+
 GpStatus WINGDIPAPI GdipGetStringFormatAlign(GpStringFormat *format,
     StringAlignment *align)
 {

include/gdiplusflat.h

@@ -251,6 +251,7 @@ GpStatus WINGDIPAPI GdipDeleteFont(GpFont*);
 GpStatus WINGDIPAPI GdipGetLogFontW(GpFont*,GpGraphics*,LOGFONTW*);
 
 GpStatus WINGDIPAPI GdipCreateStringFormat(INT,LANGID,GpStringFormat**);
+GpStatus WINGDIPAPI GdipDeleteStringFormat(GpStringFormat*);
 GpStatus WINGDIPAPI GdipGetStringFormatAlign(GpStringFormat*,StringAlignment*);
 GpStatus WINGDIPAPI GdipGetStringFormatHotkeyPrefix(GDIPCONST GpStringFormat*,INT*);
 GpStatus WINGDIPAPI GdipGetStringFormatLineAlign(GpStringFormat*,StringAlignment*);