Avoid undefined behavior when printing function pointers.

* src/print.c (print_vectorlike): Don’t pass a function pointer to
‘snprintf’, as that is undefined behavior.  Instead, print the
individual bytes making up the function pointer.
1 job for master in 66 minutes and 17 seconds (queued for 2 seconds)
Status Job ID Name Coverage
failed #1648


Name Stage Failure
test-all Test
make[2]: *** [check-doit] Error 1
Makefile:315: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:290: 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