* lisp/textmodes/conf-mode.el (conf-mode): Fix last change

`delay-mode-hooks` cannot be tested from within `define-derived-mode`
because it's always non-nil in there, so arrange to test it before we
enter the body.
1 job for master in 56 minutes and 49 seconds (queued for 2 seconds)
Status Job ID Name Coverage
failed #5341


Name Stage Failure
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: *** [check-doit] Error 1
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:294: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1