Minor lread.c tweaks

* src/lread.c (load_warn_unescaped_character_literals):
Use AUTO_STRING to help the GC.
(Fload): Use bool for boolean.
1 job for master in 54 minutes and 19 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
failed #1431
test-all

00:54:19

 
Name Stage Failure
failed
test-all Test
Makefile:313: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:288: recipe for target 'check-expensive' failed
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:962: recipe for target 'check-expensive' failed
make[2]: *** [check-doit] Error 1
make[1]: *** [check-expensive] Error 2
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1