ITS#7789 more

persist size changes from env_open() as well. This was the
original behavior.

libraries/liblmdb/mdb.c

@@ -3791,7 +3791,8 @@ mdb_env_open2(MDB_env *env)
 		 * else use the size recorded in the existing env.
 		 */
 		env->me_mapsize = newenv ? DEFAULT_MAPSIZE : meta.mm_mapsize;
-	} else if (env->me_mapsize < meta.mm_mapsize) {
+	} else {
+		if (env->me_mapsize < meta.mm_mapsize) {
 			/* If the configured size is smaller, make sure it's
 			 * still big enough. Silently round up to minimum if not.
 			 */
@@ -3799,6 +3800,9 @@ mdb_env_open2(MDB_env *env)
 			if (env->me_mapsize < minsize)
 				env->me_mapsize = minsize;
 		}
+		if (env->me_mapsize != meta.mm_mapsize)
+			env->me_flags |= MDB_RESIZING;
+	}
 
 	rc = mdb_env_map(env, meta.mm_address, newenv || env->me_mapsize != meta.mm_mapsize);
 	if (rc)