gitk: Do not depend on Cygwin's "kill" command on Windows

diff --git a/gitk b/gitk
index 3520bdaebc29fd6c93724b0a46484ee5e9403831..bfc5cfabd312ff6efe43bb84fe9e8d0f0d970ab1 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -445,7 +445,7 @@ proc stop_instance {inst} {
        set pid [pid $fd]
 
        if {$::tcl_platform(platform) eq {windows}} {
-           exec kill -f $pid
+           exec taskkill /pid $pid
        } else {
            exec kill $pid
        }