Cleanup style and get rid of conflicts problems.

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
diff --git a/testcases/kernel/syscalls/writev/writev01.c b/testcases/kernel/syscalls/writev/writev01.c
index 52b1bb5..f3028b5 100644
--- a/testcases/kernel/syscalls/writev/writev01.c
+++ b/testcases/kernel/syscalls/writev/writev01.c
@@ -443,7 +443,7 @@
 	close(fd[0]);
 	close(fd[1]);
 	cleanup();
-	  return 0;
+	tst_exit();
 }
 
 /*