ap_rgetline: fix folding and partial line handling on ebcdic boxes. The

normal case worked OK, but due to the recursion and multiple exit points,
input bytes could go thru charset translation multiple times or not at all.

Suggested by: Justin Erenkrantz


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93776 13f79535-47bb-0310-9956-ffa450edef68