nfsd warning fix

fs/nfsd/nfsctl.c: In function 'write_filehandle':
fs/nfsd/nfsctl.c:301: warning: 'maxsize' may be used uninitialized in this function
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Neil Brown <neilb@suse.de>

fs/nfsd/nfsctl.c

@@ -298,7 +298,7 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
 	 * qword quoting is used, so filehandle will be \x....
 	 */
 	char *dname, *path;
-	int maxsize;
+	int uninitialized_var(maxsize);
 	char *mesg = buf;
 	int len;
 	struct auth_domain *dom;