reflog: refactor cmd_reflog() to "if" branches

Refactor the "if" branches in cmd_reflog() to use "else if" instead,
and remove the whitespace between them.

As with 92f4809 (multi-pack-index: refactor "goto usage" pattern,
2021-08-23) this makes this code more consistent with how
builtin/{bundle,stash,commit-graph,multi-pack-index}.c look and
behave. Their top-level commands are all similar sub-command routing
functions.

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

builtin/reflog.c

@@ -384,14 +384,11 @@ int cmd_reflog(int argc, const char **argv, const char *prefix)
 
 	if (!strcmp(argv[1], "show"))
 		return cmd_log_reflog(argc - 1, argv + 1, prefix);
-
-	if (!strcmp(argv[1], "expire"))
+	else if (!strcmp(argv[1], "expire"))
 		return cmd_reflog_expire(argc - 1, argv + 1, prefix);
-
-	if (!strcmp(argv[1], "delete"))
+	else if (!strcmp(argv[1], "delete"))
 		return cmd_reflog_delete(argc - 1, argv + 1, prefix);
-
-	if (!strcmp(argv[1], "exists"))
+	else if (!strcmp(argv[1], "exists"))
 		return cmd_reflog_exists(argc - 1, argv + 1, prefix);
 
 	return cmd_log_reflog(argc, argv, prefix);