linux-next: build warning after merge of the ext4 tree

Hi all,

After merging the ext4 tree, today's linux-next build (KCONFIG_NAME)
produced this warning:

fs/ext4/mmp.c: In function 'kmmpd':
fs/ext4/mmp.c:247:1: warning: label 'exit_thread' defined but not used [-Wunused-label]
  247 | exit_thread:
      | ^~~~~~~~~~~

Introduced by commit

  abc8250d1f1e ("ext4: possible use-after-free when remounting r/o a mmp-protected file system")

-- 
Cheers,
Stephen Rothwell