Fix number of args in main() in 2018/bellard

Out of an abundance of caution with clang defects / the ANSI C Committee
I have added a second arg to main() in case they decide to enforce the
rule that main() has 0, 2, 3 args.

2018/bellard/prog.alt.c

@@ -111,7 +111,7 @@ o[C?j*f+a:a*f+j]+=*i*(8-J)+i[1]*J+4>>3;
 K(b){
 putchar(b<0?0:b>255?255:b);
 }
-main(D){
+main(D,char**V){
 int a,l,L,M,g,N;
 _setmode(0, 32768); _setmode(1, 32768);
 s=D>1?256:1968;

2018/bellard/prog.c

@@ -109,7 +109,7 @@ o[C?j*f+a:a*f+j]+=*i*(8-J)+i[1]*J+4>>3;
 K(b){
 putchar(b<0?0:b>255?255:b);
 }
-main(D){
+main(int D,char**V){
 int a,l,L,M,g,N;
 s=D>1?256:1968;
 Q();