Fix another crash related to cached realtime music on hold.

This was another off-by-one problem caused by moh_register.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@188102 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/res/res_musiconhold.c b/res/res_musiconhold.c
index 01920e087547bdccbb42ba9302a26394063b1a59..c1ab05dac4970436949b95f3af8b75c15985c3e6 100644 (file)
--- a/res/res_musiconhold.c
+++ b/res/res_musiconhold.c
@@ -1072,7 +1072,9 @@ static int moh_register(struct mohclass *moh, int reload, int unref)
                if (!mohclass->delete) {
                        ast_log(LOG_WARNING, "Music on Hold class '%s' already exists\n", moh->name);
                        mohclass = mohclass_unref(mohclass, "unreffing mohclass we just found by name");
-                       moh = mohclass_unref(moh, "unreffing potential new moh class (it is a duplicate)");
+                       if (unref) {
+                               moh = mohclass_unref(moh, "unreffing potential new moh class (it is a duplicate)");
+                       }
                        return -1;
                }
                mohclass = mohclass_unref(mohclass, "Unreffing mohclass we just found by name");