Qt: Fix bounded fast forward with enhancement OpenGL renderer

CHANGES

@@ -20,6 +20,7 @@ Other fixes:
  - Qt: Fix crash in sprite view for partially out-of-bounds sprites (fixes mgba.io/i/2165)
  - Qt: Fix having to press controller buttons twice for menu items (fixes mgba.io/i/2143)
  - Qt: Redo sensor binding to be less fragile
+ - Qt: Fix bounded fast forward with enhancement OpenGL renderer
  - Util: Fix loading UPS patches that affect the last byte of the file
 Misc:
  - Util: Improve speed of UPS patch loading

src/platform/qt/DisplayGL.cpp

@@ -460,8 +460,9 @@ void PainterGL::draw() {
 			while (m_delayTimer.nsecsElapsed() + 1'000'000 < 1'000'000'000 / sync->fpsTarget) {
 				QThread::usleep(500);
 			}
-			forceRedraw = true;
-		} else if (!forceRedraw) {
+			forceRedraw = sync->videoFrameWait;
+		}
+		if (!forceRedraw) {
 			forceRedraw = m_delayTimer.nsecsElapsed() + 1'000'000 >= 1'000'000'000 / m_surface->screen()->refreshRate();
 		}
 	}