Fix a bug which may or may not be related to a warning reported by Patrick Laimbock.
Fix a bug which may or may not be related to a warning reported
by Patrick Laimbock.

xwhuang/sctp-refimpl,sctplab/sctp-refimpl,xwhuang/sctp-refimpl,deepak899/sctp-refimpl,xwhuang/sctp-refimpl,deepak899/sctp-refimpl,sctplab/sctp-refimpl,deepak899/sctp-refimpl,xwhuang/sctp-refimpl,xwhuang/sctp-refimpl,xwhuang/sctp-refimpl,deepak899/sctp-refimpl,sctplab/sctp-refimpl,sctplab/sctp-refimpl,sctplab/sctp-refimpl,deepak899/sctp-refimpl,sctplab/sctp-refimpl,deepak899/sctp-refimpl