[dasher] Fix setting alternate colours

[Patrick Welche <pwelche src gnome org>]

commit 5c7b3f60da6b40087869bb457a783b7b8c746ffb
Author: Patrick Welche <prlw1 cam ac uk>
Date:   Thu Feb 16 12:52:04 2012 +0000

    Fix setting alternate colours
    
    Colours for letter nodes are in the range 10-109 and their
    alternates in 140-239.
    Fixes core dump using Blissymbolics reported by Ross Summerfield.

 Src/DasherCore/AlphabetManager.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Src/DasherCore/AlphabetManager.cpp b/Src/DasherCore/AlphabetManager.cpp
index 8f6acd5..03b6aa3 100644
--- a/Src/DasherCore/AlphabetManager.cpp
+++ b/Src/DasherCore/AlphabetManager.cpp
@@ -266,7 +266,8 @@ int CAlphabetManager::GetColour(symbol sym, int iOffset) const {
       iColour = (sym % 3) + 10;
 
   // Loop on low colours for nodes (TODO: go back to colour namespaces?)
-  if((iOffset&1) == 0 && iColour < 130)
+  // letters 10-109, alternate colours 140-239
+  if((iOffset&1) == 0 && iColour < 110)
     iColour += 130;
 
   return iColour;