[parser] allow parsing bad terminating header
[parser] allow parsing bad terminating header

Normaly each header line has to end with \r\n
But a script may send header with only \n
This is usefull for httpmessage_parsecgi

mchalain/libhttpserver,ouistiti-project/libhttpserver,ouistiti-project/libhttpserver,mchalain/libhttpserver