This change fixes a few bugs in the way the far max IFP was calculated that...

This change fixes a few bugs in the way the far max IFP was calculated that were introduced in r231692.

(closes issue #16497)
Reported by: globalnetinc
Patches:
      udptl-max-ifp-fix1.diff uploaded by mnicholson (license 96)
Tested by: globalnetinc



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@240078 65c4cc65-6c06-0410-ace0-fbb531ad65f3