patch 9.1.1455: Haiku: dailog objects created with no reference

Problem:  Haiku: dailog objects created with no reference
Solution: delete the objects before returning (jinyaoguo)

In the functions gui_mch_dialog() and gui_mch_font_dialog(), Dialog
objects are created but never escape the function scope. The call to
dialog->Go() only returns a boolean value and does not retain any
reference to the Dialog object itself, which may lead to potential
memory leak.

Fix this by deleting the object after using it.

closes: #17501

Signed-off-by: jinyaoguo <guo846@purdue.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 5907766..69cf433 100644
--- a/src/version.c
+++ b/src/version.c
@@ -710,6 +710,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1455,
+/**/
     1454,
 /**/
     1453,