Change font_put_extra value for property removal from Qnil to Qunbound

* font.c (font_put_extra): If VAL is Qunbound, delete the slot for PROP from
the list of extra properties.  Previous value Qnil is valid as boolean.
(font_clear_prop): Changed argument of font_put_extra for property removal.
1 job for master in 70 minutes and 37 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Test
failed #2302
test-all

01:10:37

 
Name Stage Failure
failed
test-all Test
make[2]: *** [check-doit] Error 1
Makefile:318: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:293: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:957: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1