gitk: Fix incorrect invocation of getmergediffline

Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/gitk b/gitk
index e1848cd..f88c06e 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -2700,7 +2700,7 @@ proc getmergediffline {mdf id np} {
        incr nextupdate 100
        fileevent $mdf readable {}
        update
-       fileevent $mdf readable [list getmergediffline $mdf $id]
+       fileevent $mdf readable [list getmergediffline $mdf $id $np]
     }
 }