LU-17193 build: fix gcc-12 compiler warnings

LU-17193 build: fix gcc-12 compiler warnings

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.

Lustre-change: https://review.whamcloud.com/c/fs/lustre-release/+/52687
Lustre-commit: 1b0de05f81372eeda9a2a38142553ead7e88a431

Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I72bda8b46c51dbd42fb42bf569ba29572526acfe
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/52834
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>