diff --git a/src/backend/commands/lockcmds.c b/src/backend/commands/lockcmds.c
index 2846ef3b7bd..098227656a8 100644
--- a/src/backend/commands/lockcmds.c
+++ b/src/backend/commands/lockcmds.c
@@ -266,7 +266,7 @@ LockViewRecurse(Oid reloid, LOCKMODE lockmode, bool nowait,
 
 	LockViewRecurse_walker((Node *) viewquery, &context);
 
-	(void) list_delete_last(context.ancestor_views);
+	context.ancestor_views = list_delete_last(context.ancestor_views);
 
 	table_close(view, NoLock);
 }
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
index 575e22ce0d2..084e00f73d8 100644
--- a/src/backend/parser/analyze.c
+++ b/src/backend/parser/analyze.c
@@ -1475,8 +1475,7 @@ transformValuesClause(ParseState *pstate, SelectStmt *stmt)
 			Node	   *col = (Node *) lfirst(lc);
 			List	   *sublist = lfirst(lc2);
 
-			/* sublist pointer in exprsLists won't need adjustment */
-			(void) lappend(sublist, col);
+			sublist = lappend(sublist, col);
 		}
 		list_free(colexprs[i]);
 	}