Fixed zcompile not respecting return code range of 8bits.

src/zcompile/zcompile_main.c

@@ -97,7 +97,7 @@ int main(int argc, char **argv)
 
 	int error = zone_read(origin, zonefile, outfile, semantic_checks);
 
-	if (error) {
+	if (error != 0) {
 	  /* FIXME! */
 //		if (error < 0) {
 //			fprintf(stderr, "Finished with error: %s.\n",
@@ -105,10 +105,11 @@ int main(int argc, char **argv)
 //		} else {
 //			fprintf(stderr, "Finished with %u errors.\n");
 //		}
+		return 1;
 	} else {
 		printf("Compilation successful.\n");
 	}
 	//log_close();
-
-	return error;
+	
+	return 0;
 }