cocoa: avoid dividing by zero when setting vertical scroll position

1 files changed, 2 insertions, 1 deletions

diff --git a/cocoa/ScintillaCocoa.mm b/cocoa/ScintillaCocoa.mm
index 64981d9d6..fac9a0bc1 100644
--- a/cocoa/ScintillaCocoa.mm
+++ b/cocoa/ScintillaCocoa.mm
@@ -1522,7 +1522,8 @@ void ScintillaCocoa::SetVerticalScrollPos()
   
   // Convert absolute coordinate into the range [0..1]. Keep in mind that the visible area
   // does *not* belong to the scroll range.
-  float relativePosition = (float) topLine / MaxScrollPos();
+  int maxScrollPos = MaxScrollPos();
+  float relativePosition = (maxScrollPos > 0) ? ((float) topLine / maxScrollPos) : 0f;
   [topContainer setVerticalScrollPosition: relativePosition];
 }