Don't stretch bitmaps if destination size is empty.

core/src/fxge/win32/fx_win32_device.cpp

Index: core/src/fxge/win32/fx_win32_device.cpp
diff --git a/core/src/fxge/win32/fx_win32_device.cpp b/core/src/fxge/win32/fx_win32_device.cpp
index 5e76898db138656b796a4ddc809b9a19c6ea42b3..eee4fd82857471425ebd5ef65f3b1e78bb0f3c7a 100644
--- a/core/src/fxge/win32/fx_win32_device.cpp
+++ b/core/src/fxge/win32/fx_win32_device.cpp
@@ -515,7 +515,7 @@ FX_BOOL CGdiDeviceDriver::GDI_StretchDIBits(const CFX_DIBitmap* pBitmap1, int de
         int dest_width, int dest_height, FX_DWORD flags, void* pIccTransform)
 {
     CFX_DIBitmap* pBitmap = (CFX_DIBitmap*)pBitmap1;
-    if (pBitmap == NULL) {
+    if (pBitmap == NULL || dest_width == 0  || dest_height == 0) {
         return FALSE;
     }
     if ((pBitmap->IsCmykImage() || pIccTransform) &&
@@ -549,7 +549,7 @@ FX_BOOL CGdiDeviceDriver::GDI_StretchBitMask(const CFX_DIBitmap* pBitmap1, int d
         int alpha_flag, void* pIccTransform)
 {
     CFX_DIBitmap* pBitmap = (CFX_DIBitmap*)pBitmap1;
-    if (pBitmap == NULL) {
+    if (pBitmap == NULL || dest_width == 0  || dest_height == 0) {
         return FALSE;
     }
     _Color2Argb(bitmap_color, bitmap_color, alpha_flag | (1 << 24), pIccTransform);