connection.c: used internal US-ASCII-only hex string -> value conversion
connection.c: used internal US-ASCII-only hex string -> value conversion

git-svn-id: d3d46767b8f15aa15dc28b4413db96165ce057f7@37030 140774ce-b5e7-0310-ab8b-a85725594a96

svn2github/libmicrohttpd,svn2github/libmicrohttpd,svn2github/libmicrohttpd,svn2github/libmicrohttpd