MDEV-19114 post-push fix: SIGSEGV on INSERT

ins_node_create_entry_list(): Create dummy empty tuples for
corrupted or incomplete indexes, to avoid dereferencing a NULL
dict_field_t::col pointer in row_build_index_entry_low().

This issue was found by a crash in the test gcol.innodb_virtual_basic
when merging the fix to 10.5.

storage/innobase/row/row0ins.cc

@@ -95,33 +95,20 @@ ins_node_create(
 	return(node);
 }
 
-/***********************************************************//**
-Creates an entry template for each index of a table. */
-static
-void
-ins_node_create_entry_list(
-/*=======================*/
-	ins_node_t*	node)	/*!< in: row insert node */
+/** Create an row template for each index of a table. */
+static void ins_node_create_entry_list(ins_node_t *node)
 {
-	dict_index_t*	index;
-	dtuple_t*	entry;
-
-	ut_ad(node->entry_sys_heap);
-
-	/* We will include all indexes (include those corrupted
-	secondary indexes) in the entry list. Filtration of
-	these corrupted index will be done in row_ins() */
-
   node->entry_list.reserve(UT_LIST_GET_LEN(node->table->indexes));
 
-	for (index = dict_table_get_first_index(node->table);
-	     index != 0;
-	     index = dict_table_get_next_index(index)) {
-
-		entry = row_build_index_entry_low(
-			node->row, NULL, index, node->entry_sys_heap,
+  for (dict_index_t *index= dict_table_get_first_index(node->table); index;
+       index= dict_table_get_next_index(index))
+  {
+    /* Corrupted or incomplete secondary indexes will be filtered out in
+    row_ins(). */
+    dtuple_t *entry= index->online_status >= ONLINE_INDEX_ABORTED
+      ? dtuple_create(node->entry_sys_heap, 0)
+      : row_build_index_entry_low(node->row, NULL, index, node->entry_sys_heap,
 				  ROW_BUILD_FOR_INSERT);
-
     node->entry_list.push_back(entry);
   }
 }