lib/tst_test.c: Silence warnings.

The tst_brk() will call exit() which will exit the test but the compiler
does not know about this and produces useless warnings about fall
through in switch().

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/lib/tst_test.c b/lib/tst_test.c
index bdd47f5..adc525a 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -352,6 +352,7 @@
 	case TBROK:
 	case TCONF:
 		tst_brk(ret, "Reported by child (%i)", pid);
+	break;
 	default:
 		tst_brk(TBROK, "Invalid child (%i) exit value %i", pid, ret);
 	}
@@ -493,6 +494,7 @@
 		case '?':
 			print_help();
 			tst_brk(TBROK, "Invalid option");
+		break;
 		case 'h':
 			print_help();
 			exit(0);