[PATCH] 9p: null terminate error strings for debug print

We weren't properly NULL terminating protocol error strings for our debug
printk resulting in garbage being included in the output when debug was
enabled.
Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/9p/error.c

@@ -83,6 +83,7 @@ int v9fs_errstr2errno(char *errstr, int len)
 
 	if (errno == 0) {
 		/* TODO: if error isn't found, add it dynamically */
+		errstr[len] = 0;
 		printk(KERN_ERR "%s: errstr :%s: not found\n", __FUNCTION__,
 		       errstr);
 		errno = 1;