Use gnu99 as C standard on Linux.
Use gnu99 as C standard on Linux.

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