sdl2: Use correct sdl2_console for window events

SDL_PollEvent() polls events for all windows; therefore,
sdl2_poll_events() will poll the events for all windows and not only for
the one identified by the given sdl2_console.

This should be considered in handle_windowevent(): The window affected
by the event is not necessarily the one identified by the sdl2_console
object given to sdl2_poll_events(), but the one identified by
ev->window.windowID.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

ui/sdl2.c

@@ -507,8 +507,10 @@ static void handle_mousewheel(SDL_Event *ev)
     qemu_input_event_sync();
 }
 
-static void handle_windowevent(struct sdl2_console *scon, SDL_Event *ev)
+static void handle_windowevent(SDL_Event *ev)
 {
+    struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
+
     switch (ev->window.event) {
     case SDL_WINDOWEVENT_RESIZED:
         {
@@ -586,7 +588,7 @@ void sdl2_poll_events(struct sdl2_console *scon)
             handle_mousewheel(ev);
             break;
         case SDL_WINDOWEVENT:
-            handle_windowevent(scon, ev);
+            handle_windowevent(ev);
             break;
         default:
             break;