- use EXIT_{SUCCESS,FAILURE}. No object-code changes

archival/libunarchive/get_header_tar.c

@@ -99,7 +99,7 @@ char get_header_tar(archive_handle_t *archive_handle)
 	 * "tar: A lone zero block at N", where N = kilobyte
 	 * where EOF was met (not EOF block, actual EOF!),
 	 * and tar will exit with error code 0.
-	 * We will mimic exit(0), although we will not mimic
+	 * We will mimic exit(EXIT_SUCCESS), although we will not mimic
 	 * the message and we don't check whether we indeed
 	 * saw zero block directly before this. */
 	if (i == 0)

archival/libunarchive/open_transformer.c

@@ -40,7 +40,7 @@ int open_transformer(int src_fd,
 			close(fd_pipe.wr); /* Send EOF */
 			close(src_fd);
 		}
-		exit(0);
+		exit(EXIT_SUCCESS);
 #else
 		{
 			char *argv[4];