Add Panic in SER_AT_RAW() to help find bug
Add Panic in SER_AT_RAW() to help find bug

Tracing to attempt to find issue named here:

http://chat.stackoverflow.com/transcript/message/31685586#31685586

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