When parsing environment variable ASTERISK_PROMPT, make sure to proceed to the...

When parsing environment variable ASTERISK_PROMPT, make sure to proceed to the next character when a non format specifier is used (no %). Otherwise, the while loop looking for the null byte will never exit.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@167125 65c4cc65-6c06-0410-ace0-fbb531ad65f3