Commit: runtime(termdebug): fix mousemodel restoration by comparing against null_string

[Christian Brabandt]

runtime(termdebug): fix mousemodel restoration by comparing against null_string

Commit: https://github.com/vim/vim/commit/dfc21db0b0f9c61d66aeefc02ec4c06ec645bd09
Author: Ernie Rael <err...@raelity.com>
Date: Mon Jun 10 18:12:07 2024 +0200

runtime(termdebug): fix mousemodel restoration by comparing against null_string

closes: https://github.com/vim/vim/issues/14951

Signed-off-by: Ernie Rael <err...@raelity.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
index 26c266598..9d0f1ef20 100644
--- a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
+++ b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
@@ -109,7 +109,7 @@ var winbar_winids = []
var plus_map_saved = {}
var minus_map_saved = {}
var k_map_saved = {}
-var saved_mousemodel = ''
+var saved_mousemodel = null_string


# Need either the +terminal feature or +channel and the prompt buffer.
@@ -1220,7 +1220,7 @@ def DeleteCommands()
win_gotoid(curwinid)
winbar_winids = []

- if saved_mousemodel != ''
+ if saved_mousemodel isnot null_string
&mousemodel = saved_mousemodel
saved_mousemodel = null_string
try