* src/profiler.c: Leave `key` hashslots as Qunbound (bug#37382)

Now that "key == Qunbound" is used to determine if a hash table entry
is available, we can't stash pre-allocated vectors into the `key` slot
anymore, so use the `value` slot instead.

(make_log): Pre-fill the `value` slots i.s.o `key`.
(evict_lower_half): Stash key back into `value`, i.s.o `key`.
(record_backtrace): Get pre-allocated vector for `value` i.s.o `key`.
1 job for master in 54 minutes and 6 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #3258
test-all

00:54:06

 
Name Stage Failure
failed
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
make[2]: *** [check-doit] Error 1
make[1]: *** [check-expensive] Error 2
Makefile:294: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
ERROR: Job failed: exit code 1