More fixes for MDB_LAST

Make sure C_INITIALIZED gets set on successful call

libraries/liblmdb/mdb.c

@@ -4669,9 +4669,9 @@ mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data)
 	}
 	assert(IS_LEAF(mc->mc_pg[mc->mc_top]));
 
-	mc->mc_flags |= C_INITIALIZED|C_EOF;
 	mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]) - 1;
 	}
+	mc->mc_flags |= C_INITIALIZED|C_EOF;
 	leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
 
 	if (IS_LEAF2(mc->mc_pg[mc->mc_top])) {

libraries/liblmdb/mtest.c

@@ -101,6 +101,11 @@ int main(int argc,char * argv[])
 				(int) key.mv_size,  (char *) key.mv_data,
 				(int) data.mv_size, (char *) data.mv_data);
 		}
+		printf("Cursor last\n");
+		rc = mdb_cursor_get(cursor, &key, &data, MDB_LAST);
+		printf("key: %.*s, data: %.*s\n",
+			(int) key.mv_size,  (char *) key.mv_data,
+			(int) data.mv_size, (char *) data.mv_data);
 		printf("Cursor prev\n");
 		while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
 			printf("key: %.*s, data: %.*s\n",