CephxProtocol.cc: catch error by reference

Follow 'Throw by value, catch by reference' to void copying and
potential slicing the exception.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

diff --git a/src/auth/cephx/CephxProtocol.h b/src/auth/cephx/CephxProtocol.h
index 9386a410f95d8e0706bd67c474535c35511f94fe..19f4f23035339ff8468e9b1456684c74fcd7d457 100644 (file)
--- a/src/auth/cephx/CephxProtocol.h
+++ b/src/auth/cephx/CephxProtocol.h
@@ -474,7 +474,7 @@ int decode_decrypt(CephContext *cct, T& t, const CryptoKey& key,
     ::decode(bl_enc, iter);
     decode_decrypt_enc_bl(cct, t, key, bl_enc, error);
   }
-  catch (buffer::error e) {
+  catch (buffer::error &e) {
     error = "error decoding block for decryption";
   }
   if (!error.empty())