LMDB: include filename in open-error message

diff --git a/src/src/lookups/lmdb.c b/src/src/lookups/lmdb.c
index 8b0ffd2dd1c30e766ecc027acb4ab694d01a1ba7..a6888d5a9923166ac62993b6bad05e3eba8757aa 100644 (file)
--- a/src/src/lookups/lmdb.c
+++ b/src/src/lookups/lmdb.c
@@ -41,7 +41,7 @@ if ((ret = mdb_env_create(&db_env)))
 
 if ((ret = mdb_env_open(db_env, CS filename, MDB_NOSUBDIR|MDB_RDONLY, 0660)))
   {
-  errstr = US"open environment";
+  errstr = string_sprintf("open environment with %s", filename);
   goto bad;
   }