LU-17193 build: fix gcc-12 compiler warnings

LU-17193 build: fix gcc-12 compiler warnings

Building on el9.2 hit a couple of new errors in configure, ex:
  ((struct inode_operations *)1)->fileattr_get()
hits:
  error: array subscript 0 is outside array bounds
         of ‘struct inode_operations[0]’

A few instances of QCTL_COPY() should be QCTL_COPY_NO_PNAME()
as the zero-length array to hold the pool name is not
allocated in these cases.

Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I72bda8b46c51dbd42fb42bf569ba29572526acfe
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/52687
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: xinliang <xinliang.liu@linaro.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>