qemu-keymap: Release local allocation references

qemu-keymap: Release local allocation references

Commit 2523baf7fb4d ("qemu-keymap: Make references to allocations
static") made references to allocations static to ensure LeakSanitizer
can track them. This trick unfortunately did not work with gcc version
14.0.1; that compiler is clever enough to know that the value of the
"state" variable is only referred in the current execution of the
function and to put it on the stack.

Release references to allocations and suppress the error once for all.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>