[orca] Fix for bgo#591336 - Need a sanity check in Gecko's searchForCaretLocation

[Joanmarie Diggs <joanied src gnome org>]

commit 9b76d0236ba781fd1dc1310782623ddc66518d1c
Author: Joanmarie Diggs <joanmarie diggs gmail com>
Date:   Mon Aug 10 10:43:42 2009 -0400

    Fix for bgo#591336 - Need a sanity check in Gecko's searchForCaretLocation

 src/orca/scripts/toolkits/Gecko/script.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/scripts/toolkits/Gecko/script.py b/src/orca/scripts/toolkits/Gecko/script.py
index 67367eb..4a05481 100644
--- a/src/orca/scripts/toolkits/Gecko/script.py
+++ b/src/orca/scripts/toolkits/Gecko/script.py
@@ -5307,7 +5307,7 @@ class Script(default.Script):
             else:
                 context = [acc, offset]
                 childIndex = self.getChildIndex(acc, offset)
-                if childIndex >= 0:
+                if childIndex >= 0 and acc.childCount:
                     acc = acc[childIndex]
                 else:
                     break