Only have 2 return codes: success and failure

src/main-filter.py

@@ -122,7 +122,8 @@ def main():
 	write_file.write(args.outfile, matches)
 
 	# If we found nothing, return code 2
-	sys.exit(2)
+	if len(matches) == 0:
+		sys.exit(1)
 
 if __name__ == '__main__':
 	try:

src/main-verify.py

@@ -124,7 +124,7 @@ def main():
 	if any_verified and not any_fail:
 		sys.exit(0)
 	else:
-		sys.exit(2)
+		sys.exit(1)
 
 if __name__ == '__main__':
 	try: