From dae5bf3516ca6beedfebebbbbbeebaee550d2954 Mon Sep 17 00:00:00 2001
From: Fabio Erculiani <lxnay@sabayon.org>
Date: Sun, 1 May 2011 16:36:05 +0200
Subject: [PATCH] [entropy.client.interfaces.dep] validate
 retrieveKeySlotAggregated outcome before processing

---
 libraries/entropy/client/interfaces/dep.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libraries/entropy/client/interfaces/dep.py b/libraries/entropy/client/interfaces/dep.py
index 17648262a..66042e5ec 100644
--- a/libraries/entropy/client/interfaces/dep.py
+++ b/libraries/entropy/client/interfaces/dep.py
@@ -1721,8 +1721,9 @@ class CalculatorsMixin:
                     revdep_db = self.open_repository(revdep_repo_id)
                     revdep_keyslot = revdep_db.retrieveKeySlotAggregated(
                         revdep_pkg_id)
-                    revdep_keyslot = entropy.dep.remove_tag_from_slot(
-                        revdep_keyslot)
+                    if revdep_keyslot is not None:
+                        revdep_keyslot = entropy.dep.remove_tag_from_slot(
+                            revdep_keyslot)
                     if revdep_keyslot != keyslot:
                         filtered_reverse_deps.add(revdep_match)
                 reverse_deps = filtered_reverse_deps