Fix two K&R C portability issues

Fix two K&R C portability issues

Fix the following two errors emitted by the Apple K&R C compiler
on Apple A/UX:

"./class.c", line 47: no automatic aggregate initialization
"./class.c", line 47: illegal lhs of assignment operator

"./conf.c", line 1052: syntax error

Tested on A/UX 3.1.1.

(cherry picked from commit a4ed90ba9af1dce4df3f57f6a7c84097000c7256)