Fixed 32bpp base graphics set not working on 16bpp videomode

src/fontcache.cpp

@@ -453,7 +453,7 @@ static void *AllocateFont(size_t size)
 static bool GetFontAAState(FontSize size)
 {
 	/* AA is only supported for 32 bpp */
-	if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 32) return false;
+	if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 32 && BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 16) return false;
 
 	switch (size) {
 		default: NOT_REACHED();