win-capture: Add SDL_app to list of generic classes

libobs/util/windows/window-helpers.c

@@ -468,6 +468,7 @@ static int window_rating(HWND window, enum window_priority priority, const char
 
 static const char *generic_class_substrings[] = {
 	"Chrome",
+	"SDL_app",
 	NULL,
 };