gdiplus: Fix memory leak in GdipImageRotateFlip.
diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index 233a9eac..9b36280 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -1973,6 +1973,7 @@
     assert(dst->image.type == ImageTypeBitmap);
 
     GdipFree(dst->bitmapbits);
+    GdipFree(dst->own_bits);
     DeleteDC(dst->hdc);
     DeleteObject(dst->hbitmap);