* comp.c (emit_mvar_access): Fix speed 1 compilation

At speed 1 propagate does not run and all mvars are allocated in array
0.
4 jobs for feature/native-comp in 304 minutes and 29 seconds (queued for 4 seconds)
latest
Status Job ID Name Coverage
  Test
failed #5331
test-filenotify-gio

01:27:58

failed #5332
test-native-bootstrap-speed0

03:00:00

passed #5333
test-native-bootstrap-speed1

04:08:09

passed #5334
test-native-bootstrap-speed2

05:04:27

 
Name Stage Failure
failed
test-native-bootstrap-speed0 Test The script exceeded the maximum execution time set for the job
 ELC+ELN   leim/quail/latin-pre.elc
ELC+ELN leim/quail/lrt.elc
ELC+ELN leim/quail/persian.elc
ELC+ELN leim/quail/programmer-dvorak.elc
ELC+ELN leim/quail/py-punct.elc
ELC+ELN leim/quail/pypunct-b5.elc
ELC+ELN leim/quail/quick-b5.elc
Pulling docker image gitlab/gitlab-runner-helper:x86_64-d0b76032 ...
ERROR: Job failed: execution took longer than 3h0m0s seconds
failed
test-filenotify-gio Test
  SKIPPED  file-notify-test10-sufficient-resources-remote

Makefile:182: recipe for target 'lisp/filenotify-tests.log' failed
make[1]: *** [lisp/filenotify-tests.log] Error 1
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:248: recipe for target 'lisp/filenotify-tests' failed
make: *** [lisp/filenotify-tests] Error 2
make: Leaving directory '/builds/emacs/emacs/test'
ERROR: Job failed: exit code 1