Correct debug assertions

Node pointer recors contain dict_index_get_n_unique_in_tree_nonleaf(index)+1
instead of index->n_uniq+1 fields.

rec_get_offsets_func(): Remove the incorrect assertion. Later in
the function there are assertion for checking the exact field count.

storage/innobase/rem/rem0rec.cc

@@ -589,8 +589,6 @@ rec_get_offsets_func(
 		infimum and supremum record based on the heap number. */
 		ut_d(const bool is_user_rec = rec_get_heap_no_old(rec)
 		     >= PAGE_HEAP_NO_USER_LOW);
-		ut_ad(n <= ulint(index->n_fields + !leaf) || index->is_dummy
-		      || dict_index_is_ibuf(index));
 		/* The infimum and supremum records carry 1 field. */
 		ut_ad(is_user_rec || n == 1);
 		ut_ad(!is_user_rec || leaf || index->is_dummy
@@ -1569,7 +1567,8 @@ rec_copy_prefix_to_dtuple_func(
 	ulint*	offsets	= offsets_;
 	rec_offs_init(offsets_);
 
-	ut_ad(is_leaf || n_fields <= unsigned(index->n_uniq + 1));
+	ut_ad(is_leaf || n_fields
+	      <= dict_index_get_n_unique_in_tree_nonleaf(index) + 1);
 
 	offsets = rec_get_offsets(rec, index, offsets, is_leaf,
 				  n_fields, &heap);