bug#34800754 Assertion failure: dict0dict.ic:1102:col_index < table->n_cols thread 1406284440

Issue:
An assert in storage/innobase/include/dict0dict.ic
triggers, indicating an invalid column index, while the column
index is in fact correct.

Background:
The column index provided to dict_table_get_index_on_first_col
is an index among all columns, while the n_cols field of
dict_table_t only countains the number of non-virtual columns.
Thus, the assert could be triggered with correct arguments.

Fix:
Changing the assert to compare against the n_t_cols field, the
total number of columns.

Change-Id: I90cc8c07d428c9117ca7873e9f53752d50f800e6

Author: GBuella

storage/innobase/include/dict0dict.ic

@@ -1100,7 +1100,7 @@ static inline dict_index_t *dict_table_get_index_on_first_col(
     ulint col_index)     /*!< in: position of column
                          in table */
 {
-  ut_ad(col_index < table->n_cols);
+  ut_a(col_index < table->n_t_cols);
 
   ulint non_v_col_index = col_index;
   dict_col_t *column = nullptr;