some minor cleanup

I can't see the mouse wheel ever setting dx, but it's more obvious now
that the editor doesn't support panning left/right.

1 files changed, 1 insertions, 1 deletions

diff --git a/edit.lua b/edit.lua
index 3f87551..b894dde 100644
--- a/edit.lua
+++ b/edit.lua
@@ -310,7 +310,7 @@ function edit.mouse_wheel_move(State, dx,dy)
     for i=1,math.floor(dy) do
       Text.up(State)
     end
-  else
+  elseif dy < 0 then
     State.cursor1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos}
     for i=1,math.floor(-dy) do
       Text.down(State)