From 028625988fb7e883ae7ee1f682c9eb84a9c5360e Mon Sep 17 00:00:00 2001
From: Krasimir Angelov <kr.angelov@gmail.com>
Date: Mon, 17 Apr 2023 21:13:49 +0200
Subject: [PATCH] remove incorrect optimization

---
 src/runtime/c/pgf/phrasetable.cxx | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/runtime/c/pgf/phrasetable.cxx b/src/runtime/c/pgf/phrasetable.cxx
index e1bd6d8bb..23507dcc2 100644
--- a/src/runtime/c/pgf/phrasetable.cxx
+++ b/src/runtime/c/pgf/phrasetable.cxx
@@ -397,16 +397,12 @@ PgfPhrasetable phrasetable_delete(PgfPhrasetable table,
         PgfPhrasetable left = phrasetable_delete(table->left,
                                                  container, seq_index,
                                                  seq);
-        if (left == table->left)
-            return table;
         table = Node<PgfPhrasetableEntry>::upd_node(table,left,table->right);
         return Node<PgfPhrasetableEntry>::balanceR(table);
     } else if (cmp > 0) {
         PgfPhrasetable right = phrasetable_delete(table->right, 
                                                   container, seq_index,
                                                   seq);
-        if (right == table->right)
-            return table;
         table = Node<PgfPhrasetableEntry>::upd_node(table,table->left,right);
         return Node<PgfPhrasetableEntry>::balanceL(table);
     } else {