protect UNO EnvStack's s_setCurrent() against unknown threadid

untracked threadIds have been observed and can result in crashes.
s_getCurrent() already checks them and s_setCurrent() does it now.

1 files changed, 2 insertions, 2 deletions

diff --git a/cppu/source/uno/EnvStack.cxx b/cppu/source/uno/EnvStack.cxx
index 46865115d97f..6fce75c5ae5b 100644
--- a/cppu/source/uno/EnvStack.cxx
+++ b/cppu/source/uno/EnvStack.cxx
@@ -76,11 +76,11 @@ static void s_setCurrent(uno_Environment * pEnv)
     osl::MutexGuard guard(s_threadMap_mutex);
     if (pEnv)
         s_threadMap[threadId] = pEnv;
-
     else
     {
         ThreadMap::iterator iEnv = s_threadMap.find(threadId);
-        s_threadMap.erase(iEnv);
+        if( iEnv != s_threadMap.end())
+            s_threadMap.erase(iEnv);
     }
 }