monclient: fix crash on shutdown

cur_con may be null on shutdown.

Signed-off-by: Sage Weil <sage.weil@dreamhost.com>

diff --git a/src/mon/MonClient.cc b/src/mon/MonClient.cc
index d96e619075feb241920cf4eeb815372ed474bf9a..70e14e9be300764b1f01a8868e8103dfa32b1bba 100644 (file)
--- a/src/mon/MonClient.cc
+++ b/src/mon/MonClient.cc
@@ -350,8 +350,10 @@ void MonClient::shutdown()
   monc_lock.Lock();
   timer.shutdown();
 
-  cur_con->put();
-  cur_con = NULL;
+  if (cur_con) {
+    cur_con->put();
+    cur_con = NULL;
+  }
 
   monc_lock.Unlock();
 }