auto: Catch exceptions by const reference

Signed-off-by: Adam C. Emerson <aemerson@redhat.com>

diff --git a/src/mon/AuthMonitor.cc b/src/mon/AuthMonitor.cc
index aff80e9440e4216833b0af0f1c0235d7c069d998..dfb166cfb2cdc9956eba2fcb801731ae410e5823 100644 (file)
--- a/src/mon/AuthMonitor.cc
+++ b/src/mon/AuthMonitor.cc
@@ -1582,7 +1582,7 @@ bool AuthMonitor::_upgrade_format_to_dumpling()
       bufferlist::iterator it = p->second.caps["mon"].begin();
       decode(mon_caps, it);
     }
-    catch (buffer::error) {
+    catch (const buffer::error&) {
       dout(10) << __func__ << " unable to parse mon cap for "
               << p->first << dendl;
       continue;