control: fix delete mismatch
outqueue: avoid NULL pointer dereference

If pstamp exceeds stamp, packetLink will be set to 0. Moreover, there's
no point in checking if pstamp > stamp AND if pstamp is >= stamp.
incqueue: avoid NULL pointer dereference
incqueue: fix delete mismatch
Merge pull request #5 from tmatth/clang_fixes

Clang fixes for 2.0.7