fix race/endless loop on exit:

x42 · x42 · commit b28706852d9f · 2013-07-04T21:32:41.000+02:00
if gtk is going away while ardour updates the splash-screen:
Gtk-CRITICAL **: IA__gtk_main_quit: assertion `main_loops != NULL' failed
diff --git a/gtk2_ardour/splash.cc b/gtk2_ardour/splash.cc
@@ -236,7 +236,7 @@ Splash::message (const string& msg)
 		}
 
                 while (!expose_done) {
-                        gtk_main_iteration ();
+                        if(gtk_main_iteration ()) return; // quit was called
                 }
 		gdk_display_flush (gdk_display_get_default());
 	}

Original file line number	Diff line number	Diff line change
`@@ -236,7 +236,7 @@ Splash::message (const string& msg)`
`236`	`236`	`}`
`237`	`237`
`238`	`238`	`while (!expose_done) {`
`239`		`- gtk_main_iteration ();`
	`239`	`+ if(gtk_main_iteration ()) return; // quit was called`
`240`	`240`	`}`
`241`	`241`	`gdk_display_flush (gdk_display_get_default());`
`242`	`242`	`}`