Unless i am very mistaken, function_realtime_read() was
broken in that it would always return an empty string
(because ast_build_string() advanced the pointer to the
end of the string, and there was no reference to the
initial value.

This commit should fix this problem.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48551 65c4cc65-6c06-0410-ace0-fbb531ad65f3