Correct a function comment

The comment became stale in commit 9f57e595
which removed the parameter "flags".

storage/innobase/include/trx0rec.h

@@ -226,10 +226,8 @@ trx_undo_report_row_operation(
 					marking, the record in the clustered
 					index, otherwise NULL */
 	const ulint*	offsets,	/*!< in: rec_get_offsets(rec) */
-	roll_ptr_t*	roll_ptr)	/*!< out: rollback pointer to the
-					inserted undo log record,
-					0 if BTR_NO_UNDO_LOG
-					flag was specified */
+	roll_ptr_t*	roll_ptr)	/*!< out: DB_ROLL_PTR to the
+					undo log record */
 	MY_ATTRIBUTE((nonnull(1,2,8), warn_unused_result));
 /******************************************************************//**
 Copies an undo record to heap. This function can be called if we know that

storage/innobase/trx/trx0rec.cc

@@ -1220,10 +1220,8 @@ trx_undo_report_row_operation(
 					marking, the record in the clustered
 					index, otherwise NULL */
 	const ulint*	offsets,	/*!< in: rec_get_offsets(rec) */
-	roll_ptr_t*	roll_ptr)	/*!< out: rollback pointer to the
-					inserted undo log record,
-					0 if BTR_NO_UNDO_LOG
-					flag was specified */
+	roll_ptr_t*	roll_ptr)	/*!< out: DB_ROLL_PTR to the
+					undo log record */
 {
 	trx_t*		trx;
 	trx_undo_t*	undo;

storage/xtradb/include/trx0rec.h

@@ -226,10 +226,8 @@ trx_undo_report_row_operation(
 					marking, the record in the clustered
 					index, otherwise NULL */
 	const ulint*	offsets,	/*!< in: rec_get_offsets(rec) */
-	roll_ptr_t*	roll_ptr)	/*!< out: rollback pointer to the
-					inserted undo log record,
-					0 if BTR_NO_UNDO_LOG
-					flag was specified */
+	roll_ptr_t*	roll_ptr)	/*!< out: DB_ROLL_PTR to the
+					undo log record */
 	MY_ATTRIBUTE((nonnull(1,2,8), warn_unused_result));
 /******************************************************************//**
 Copies an undo record to heap. This function can be called if we know that

storage/xtradb/trx/trx0rec.cc

@@ -1221,10 +1221,8 @@ trx_undo_report_row_operation(
 					marking, the record in the clustered
 					index, otherwise NULL */
 	const ulint*	offsets,	/*!< in: rec_get_offsets(rec) */
-	roll_ptr_t*	roll_ptr)	/*!< out: rollback pointer to the
-					inserted undo log record,
-					0 if BTR_NO_UNDO_LOG
-					flag was specified */
+	roll_ptr_t*	roll_ptr)	/*!< out: DB_ROLL_PTR to the
+					undo log record */
 {
 	trx_t*		trx;
 	trx_undo_t*	undo;