From d9efd136bdb2a89d19e5a95400c14accb24962f5 Mon Sep 17 00:00:00 2001
From: Martin Drab <martin.drab@email.cz>
Date: Sat, 22 Jun 2019 16:32:42 +0200
Subject: [PATCH] [gui]: Fix a double-free

---
 gui/FillterForm.pas | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gui/FillterForm.pas b/gui/FillterForm.pas
index a3a1d7b..e119be2 100644
--- a/gui/FillterForm.pas
+++ b/gui/FillterForm.pas
@@ -537,10 +537,10 @@
   If Assigned(f) Then
     begin
     ErrorMessage('The filter is already present in the list');
+    f := Nil;
     Exit;
     end;
 
-  f := Nil;
   f := TRequestFilter.NewInstance(rt);
   If Not Assigned(f) Then
     Exit;