init: simpler handling of leading dash in commands

function                                             old     new   delta
init_exec                                            233     219     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

shell/ash.c

@@ -13063,7 +13063,7 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
 		}
 	}
 #endif
-	if (/* argv[0] && */ argv[0][0] == '-')
+	if (argv[0] && argv[0][0] == '-')
 		isloginsh = 1;
 	if (isloginsh) {
 		state = 1;