# HG changeset patch
# User Dmitry Neverov <dmitry.neverov@jetbrains.com>
# Date 1364375222 -14400
# Node ID 0b7e05418aa2f005269c3fb89840a8b882a7c097
# Parent  91b58ee782acb2a1d9ea074caf172a292687f1be
Reuse empty maps to reduce memory

diff -r 91b58ee782ac -r 0b7e05418aa2 mercurial-server/src/jetbrains/buildServer/buildTriggers/vcs/mercurial/MercurialCollectChangesPolicy.java
--- a/mercurial-server/src/jetbrains/buildServer/buildTriggers/vcs/mercurial/MercurialCollectChangesPolicy.java	Tue Mar 26 15:50:03 2013 +0400
+++ b/mercurial-server/src/jetbrains/buildServer/buildTriggers/vcs/mercurial/MercurialCollectChangesPolicy.java	Wed Mar 27 13:07:02 2013 +0400
@@ -365,6 +365,8 @@
         throw new VcsException(e);
       }
     }
+    if (attributes.isEmpty())
+      return emptyMap();
     return attributes;
   }