better ctrl-alt handling, at least for SDL/X11

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1145 c046a42c-6fe2-441c-8c8c-71466251a162

sdl.c

@@ -492,7 +492,7 @@ static void sdl_refresh(DisplayState *ds)
                     }
                 }
             } else if (ev->type == SDL_KEYUP) {
-                mod_state = (SDL_GetModState() & gui_grab_code);
+                mod_state = (ev->key.keysym.mod & gui_grab_code);
                 if (!mod_state) {
                     if (gui_key_modifier_pressed) {
                         if (gui_keysym == 0) {