Fix uninitialized variable in request_file
Fix uninitialized variable in request_file

A series variable was checked conditionally to determine whether to
return R_OUT or R_NONE, but not initialized on one branch.  This
makes all branches initialize D_OUT and removes the need for the
check of the series.

kealist/ren-c,codebybrett/ren-c,codebybrett/ren-c,kealist/ren-c,draegtun/ren-c,rgchris/ren-c,giuliolunati/ren-c,giuliolunati/ren-c,rgchris/ren-c,draegtun/ren-c,draegtun/ren-c,giuliolunati/ren-c,rgchris/ren-c,codebybrett/ren-c,hostilefork/rebol,hostilefork/rebol,giuliolunati/ren-c,hostilefork/rebol,draegtun/ren-c,kealist/ren-c,draegtun/ren-c,codebybrett/ren-c,rgchris/ren-c,giuliolunati/ren-c,draegtun/ren-c,codebybrett/ren-c,hostilefork/rebol,rgchris/ren-c,hostilefork/rebol,kealist/ren-c,kealist/ren-c,kealist/ren-c,codebybrett/ren-c,hostilefork/rebol