Fix for map tavern (video set to standard)

client/GUIClasses.cpp

@@ -3742,8 +3742,10 @@ CTavernWindow::CTavernWindow(const CGObjectInstance *TavernObj):
 		if(selected == -1)
 			recruit->block(true);
 	}
-    CCS->videoh->open(LOCPLINT->castleInt->town->town->clientInfo.tavernVideo);
-
+	if (LOCPLINT->castleInt && LOCPLINT->castleInt->town->town->clientInfo.tavernVideo!="")
+		CCS->videoh->open(LOCPLINT->castleInt->town->town->clientInfo.tavernVideo);
+	else
+		CCS->videoh->open("TAVERN.BIK");
 }
 
 void CTavernWindow::recruitb()