open-iscsi: add missing break to patch

srcpkgs/open-iscsi/patches/fix-musl.patch

@@ -17,10 +17,11 @@ Later check this flag and error out, if it is set.
  	struct sigaction sa_old;
  	struct sigaction sa_new;
  	struct list_head ifaces;
-@@ -3426,6 +3427,10 @@
+@@ -3426,6 +3427,11 @@
  			break;
  		case 'h':
  			usage(0);
++			break;
 +		case '?':
 +			log_error("unrecognized character '%c'", optopt);
 +			argerror = 1;