vout: pass non-left-mouse-button double-clicks on Windows too

Follow-up to ed22580d, which did this on
Linux.

modules/video_output/win32/events.c

@@ -277,6 +277,9 @@ static void *EventThread( void *p_this )
         case WM_MBUTTONUP:
             MouseReleased( p_event, MOUSE_BUTTON_CENTER );
             break;
+        case WM_MBUTTONDBLCLK:
+            MousePressed( p_event, msg.hwnd, MOUSE_BUTTON_CENTER );
+            break;
 
         case WM_RBUTTONDOWN:
             MousePressed( p_event, msg.hwnd, MOUSE_BUTTON_RIGHT );
@@ -284,6 +287,9 @@ static void *EventThread( void *p_this )
         case WM_RBUTTONUP:
             MouseReleased( p_event, MOUSE_BUTTON_RIGHT );
             break;
+        case WM_RBUTTONDBLCLK:
+            MousePressed( p_event, msg.hwnd, MOUSE_BUTTON_RIGHT );
+            break;
 
         case WM_KEYDOWN:
         case WM_SYSKEYDOWN: