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

Hi all,

After merging the block tree, today's linux-next build (powerpc
ppc64_defconfig) produced this warning:

drivers/nvdimm/pmem.c: In function 'pmem_pagemap_cleanup':
drivers/nvdimm/pmem.c:338:24: warning: unused variable 'q' [-Wunused-variable]
  338 |  struct request_queue *q =
      |                        ^

Introduced by commit

  80b58f4e9f4a ("libnvdimm/pmem: Fix blk_cleanup_disk() usage")

-- 
Cheers,
Stephen Rothwell