This will probably fix the incorrect parsing of literals inside

This will probably fix the incorrect parsing of literals inside
bodystructures. Somehow the offset of $i was incorrect when returning in the
parser. Note: due to the trial and error way (in some design fases) of programming when writing the
structure parser things has come a bit too complex. I have already developed
a new parser that will be used for 1.5. That parser will be a lot easier to
follow and less bug sensitive like the  one we use now.

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@4358 7612ce4b-ef26-0410-bec9-ea0150e637f0