addresses #846

tmp_key_buff was not big enough

git-svn-id: file:///svn/mysql/tokudb-engine/src@4200 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/ha_tokudb.cc

@@ -3238,7 +3238,7 @@ int ha_tokudb::add_index(TABLE *table_arg, KEY *key_info, uint num_of_keys) {
     DBT current_primary_key;
     DBT row;
     DB_TXN* txn = NULL;
-    uchar tmp_key_buff[table_arg->s->rec_buff_length];
+    uchar tmp_key_buff[2*table_arg->s->rec_buff_length];
     //
     // these variables are for error handling
     //