Python API

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Bugfix #5398: setting object layers from background render caused "bad call
to addqueue: 0 (18, 1)" messages to be sent to the console.  Add a check in
addqueue_ext() for G.background first before printing.

source/blender/src/editscreen.c

@@ -480,7 +480,7 @@ static void headmenu(ScrArea *sa)
 static void addqueue_ext(short win, unsigned short event, short val, char ascii)
 {
 	if (win<4 || !areawinar[win]) {
-		if(win==0) // other win ids are for mainwin & renderwin
+		if(win==0 && !G.background) /* other win ids are for mainwin & renderwin */
 			printf("bad call to addqueue: %d (%d, %d)\n", win, event, val);
 	} 
 	else {