gdiplus: Fix a typo that breaks the Mingw build.

dlls/gdiplus/brush.c

diff --git a/dlls/gdiplus/brush.c b/dlls/gdiplus/brush.c
index 7e1fa69..f0c9b20 100644
--- a/dlls/gdiplus/brush.c
+++ b/dlls/gdiplus/brush.c
@@ -149,7 +149,7 @@
 /******************************************************************************
  * GdipCreateHatchBrush [GDIPLUS.@]
  */
-GpStatus WINGDIAPI GdipCreateHatchBrush(HatchStyle hatchstyle, ARGB forecol, ARGB backcol, GpHatch **brush)
+GpStatus WINGDIPAPI GdipCreateHatchBrush(HatchStyle hatchstyle, ARGB forecol, ARGB backcol, GpHatch **brush)
 {
     COLORREF fgcol = ARGB2COLORREF(forecol);