Force a relayout of the video display after switching visual tools. Fixes a bug where the subtoolbar would sometimes appear in the wrong place.

Originally committed to SVN as r5959.

aegisub/src/video_display.cpp

@@ -404,6 +404,7 @@ void VideoDisplay::SetTool(VisualToolBase *new_tool) {
 	tool->SetDisplayArea(viewport_left, viewport_top, viewport_width, viewport_height);
 
 	// Update size as the new typesetting tool may have changed the subtoolbar size
+	GetGrandParent()->Layout();
 	UpdateSize();
 }