Fix some warnings reported by Georgiana Chelu.
Fix some warnings reported by Georgiana Chelu.

bebo/usrsctp,faithfracture/usrsctp,JlnWntr/usrsctp,CoolmanCZ/usrsctp,sukinull/usrsctp,weinrank/usrsctp,weinrank/usrsctp,faithfracture/usrsctp,saghul/usrsctp,sukinull/usrsctp,CoolmanCZ/usrsctp,liamstask/usrsctp,CoolmanCZ/usrsctp,ossy-szeged/usrsctp,bebo/usrsctp,sctplab/usrsctp,sctplab/usrsctp,sctplab/usrsctp,JlnWntr/usrsctp,weinrank/usrsctp,JlnWntr/usrsctp,saghul/usrsctp,ossy-szeged/usrsctp,CoolmanCZ/usrsctp,faithfracture/usrsctp,liamstask/usrsctp