gitk: fix error when resizing gitkgitk-resize-error

When using gitk run on Wayland (in this case using sway window manager)
and the window is vertical split, trying to resize the split will thrown
the following error,

	expected integer but got ""
	expected integer but got ""
	    while executing
	"$win sash place 0 $sash0 [lindex $s0 1]"
	    (procedure "resizeclistpanes" line 38)
	    invoked from within
	"resizeclistpanes .tf.histframe.pwclist 983"
	    (command bound to event)

The issue is confirmed by Anders Kaseorg on the list [1].

This commit fix this issue by checking if the $s0 or $s1 is empty
string, if its true set it to 0.

PS: I have send this patch to paulus@ozlabs.org, and it seems like there
is no reply since 7 Oct. Either the email is not received or somethings
in between.

[1] https://public-inbox.org/git/1f6e179c-d9c3-e503-3218-0acf4ff27cca@mit.edu/

Signed-off-by: Shulhan <ms@kilabit.info>

1 files changed, 10 insertions, 2 deletions

diff --git a/gitk-git/gitk b/gitk-git/gitk
index 23d9dd1fe0..fc2add49b4 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -2989,8 +2989,16 @@ proc resizeclistpanes {win w} {
             $win sashpos 0 $sash0
             $win sashpos 1 $sash1
         } else {
-            $win sash place 0 $sash0 [lindex $s0 1]
-            $win sash place 1 $sash1 [lindex $s1 1]
+            set p0 [lindex $s0 1]
+            set p1 [lindex $s1 1]
+            if {$p0 eq ""} {
+                set p0 0
+            }
+            if {$p1 eq ""} {
+                set p1 0
+            }
+            $win sash place 0 $sash0 $p0
+            $win sash place 1 $sash1 $p1
         }
 	set oldsash($win) [list $sash0 $sash1]
     }