mds/Mutation: use c++11-style null pointer check

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --git a/src/mds/Mutation.cc b/src/mds/Mutation.cc
index 04a8d8ccb7e77889fc30a96b370f9afc34e91e94..5dd274d4003fc00dfe47439064b67f4475098b83 100644 (file)
--- a/src/mds/Mutation.cc
+++ b/src/mds/Mutation.cc
@@ -194,12 +194,12 @@ MDRequestImpl::More* MDRequestImpl::more()
 
 bool MDRequestImpl::has_more()
 {
-  return _more;
+  return _more != nullptr;
 }
 
 bool MDRequestImpl::has_witnesses()
 {
-  return _more && !_more->witnessed.empty();
+  return (_more != nullptr) && (!_more->witnessed.empty());
 }
 
 bool MDRequestImpl::slave_did_prepare()