Fix GCC warning: field precision specifier ‘.*’ expects argument of type...

Fix GCC warning: field precision specifier ‘.*’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=]

src/sbbs3/pktdump.c

@@ -120,7 +120,7 @@ int pktdump(FILE* fp, const char* fname)
 	printf(" to %s\n"	,faddrtoa(&dest,NULL));
 
 	if(pkthdr.type2.password[0])
-		fprintf(stdout,"Password: '%.*s'\n",sizeof(pkthdr.type2.password),pkthdr.type2.password);
+		fprintf(stdout,"Password: '%.*s'\n",(int)sizeof(pkthdr.type2.password),pkthdr.type2.password);
 
 	fseek(fp,sizeof(pkthdr),SEEK_SET);