b52 build failure w/union
i686-pc-linux-gnu --union:
eval.c: In function `Fcommand_execute':
eval.c:2565: warning: implicit declaration of function `Frun_hooks'
eval.c:2565: incompatible types in return
eval.c: At top level:
eval.c:3615: warning: type mismatch with previous implicit declaration
eval.c:2565: warning: previous implicit declaration of `Frun_hooks'
eval.c:3615: warning: `Frun_hooks' was previously implicitly declared to return
`int'
make[1]: *** [eval.o] Error 1