From c6701f987ed4cbad83c2cd67c9107b52337d6b97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Alvergnat?= <toilal.dev@gmail.com>
Date: Sun, 14 Oct 2018 23:06:12 +0200
Subject: [PATCH] Fix possible crash for some release names

Close #573
Close #570
---
 guessit/rules/properties/release_group.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/guessit/rules/properties/release_group.py b/guessit/rules/properties/release_group.py
index 5144a90..4a01c46 100644
--- a/guessit/rules/properties/release_group.py
+++ b/guessit/rules/properties/release_group.py
@@ -188,7 +188,8 @@ class DashSeparatedReleaseGroup(Rule):
                 releasegroup = Match(candidate.start, candidate.end, name='release_group',
                                      formatter=self.value_formatter, input_string=candidate.input_string)
 
-                to_append.append(releasegroup)
+                if releasegroup.value:
+                    to_append.append(releasegroup)
                 return to_remove, to_append