auth lmdb: avoid blanket std import; fixes #8872

diff --git a/ext/lmdb-safe/lmdb-safe.cc b/ext/lmdb-safe/lmdb-safe.cc
index f4874261f62884eb5f60d6a09e9eb70a6d0206be..c29d29147369adfc13dbfa6de85f353c73a42876 100644 (file)
--- a/ext/lmdb-safe/lmdb-safe.cc
+++ b/ext/lmdb-safe/lmdb-safe.cc
@@ -6,7 +6,10 @@
 #include <string.h>
 #include <map>
 
-using namespace std;
+using std::string;
+using std::runtime_error;
+using std::tuple;
+using std::weak_ptr;
 
 static string MDBError(int rc)
 {