ceph_json: use different string constructor for parser bufferwip-6397

Fixes: #6397
Previous implementation did not user the constructor with the length
param.

Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/common/ceph_json.cc b/src/common/ceph_json.cc
index 84355575c6c..609d134ce5a 100644
--- a/src/common/ceph_json.cc
+++ b/src/common/ceph_json.cc
@@ -222,7 +222,7 @@ bool JSONParser::parse(const char *buf_, int len)
     return false;
   }
 
-  string json_string = buf_;
+  string json_string(buf_, len);
   // make a substring to len
   json_string = json_string.substr(0, len);
   success = read(json_string, data);