Update afl-fuzz.c
Update afl-fuzz.c

Update to remain compatible with older C compilers.
ivanfratric/winafl,googleprojectzero/winafl,ivanfratric/winafl,0vercl0k/winafl,0vercl0k/winafl,0vercl0k/winafl,googleprojectzero/winafl,0vercl0k/winafl,googleprojectzero/winafl,googleprojectzero/winafl,ivanfratric/winafl,ivanfratric/winafl