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zuke: treat toggle as play in stopped state

--- a/sys/src/cmd/audio/zuke/zuke.c

+++ b/sys/src/cmd/audio/zuke/zuke.c

@@ -724,11 +724,10 @@

 	threadexits(nil);

 }

-static void

+static int

 toggle(Player *player)

 {

-	if(player != nil)

-		sendul(player->ctl, Ctoggle);

+	return (player != nil && sendul(player->ctl, Ctoggle) == 1) ? 0 : -1;

 }

 static void

@@ -1328,7 +1327,8 @@

 			case 'c':

 			case 'p':

 			case ' ':

-				toggle(playercurr);

+				if(toggle(playercurr) != 0)

+					goto playcur;

 				break;

 			case '/':

 			case '?':