NULL noise: fs/*, mm/*, kernel/*

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/smbfs/smbiod.c b/fs/smbfs/smbiod.c
index fae8e85..6bd9b69 100644
--- a/fs/smbfs/smbiod.c
+++ b/fs/smbfs/smbiod.c
@@ -206,7 +206,7 @@
 
 	smb_close_socket(server);
 
-	if (pid == 0) {
+	if (!pid) {
 		/* FIXME: this is fatal, umount? */
 		printk(KERN_ERR "smb_retry: no connection process\n");
 		server->state = CONN_RETRIED;