Fix for a crash in llgroupmgr.cpp

this commit comes from a commit from Hecklezz in LL viewer repository. It aims to fix a crash occurring in llgroupmgr.cpp

1 files changed, 4 insertions, 3 deletions

diff --git a/indra/newview/llgroupmgr.cpp b/indra/newview/llgroupmgr.cpp
index e0da762279..80fae34706 100644
--- a/indra/newview/llgroupmgr.cpp
+++ b/indra/newview/llgroupmgr.cpp
@@ -869,9 +869,10 @@ void LLGroupMgr::removeObserver(LLGroupMgrObserver* observer)
     {
         return;
     }
-    observer_multimap_t::iterator it;
-    it = mObservers.find(observer->getID());
-    while (it != mObservers.end())
+
+    observer_multimap_t::iterator it = mObservers.lower_bound(observer->getID());
+    observer_multimap_t::iterator end = mObservers.upper_bound(observer->getID());
+    for (; it != end; ++it)
     {
         if (it->second == observer)
         {