[orca] Ensure braille viewport[0] is an int; not a float

[Joanmarie Diggs <joanied src gnome org>]

commit d27fde579be0ae94dae13656e315d826f430271b
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Aug 16 14:34:27 2016 -0400

    Ensure braille viewport[0] is an int; not a float

 src/orca/braille.py |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/braille.py b/src/orca/braille.py
index f14f1d0..715b4f2 100644
--- a/src/orca/braille.py
+++ b/src/orca/braille.py
@@ -1149,6 +1149,7 @@ def _realignViewport(string, focusOffset, cursorOffset):
         #
         viewport[0] = min(viewport[0],
                           max(leftMostEdge, len(string) - _displaySize[0]))
+        viewport[0] = int(viewport[0])
 
 def refresh(panToCursor=True,
             targetCursorCell=0,
@@ -1279,7 +1280,7 @@ def refresh(panToCursor=True,
     #
     _realignViewport(string, focusOffset, cursorOffset)
 
-    startPos = viewport[0]
+    startPos = int(viewport[0])
     endPos = startPos + _displaySize[0]
 
     # Now normalize the cursor position to BrlTTY, which uses 1 as