119504 backing out the fix for bug 119504 could break other cases.

content/xul/templates/src/nsXULOutlinerBuilder.cpp

@@ -1118,7 +1118,7 @@ nsXULOutlinerBuilder::ReplaceMatch(nsIRDFResource* aMember,
                     if (cmp < 0)
                         left = ++index;
                     else if (cmp > 0)
-                        right = --index;
+                        right = index - 1;
                     else
                         break;
                 }

content/xul/templates/src/nsXULTreeBuilder.cpp

@@ -1118,7 +1118,7 @@ nsXULOutlinerBuilder::ReplaceMatch(nsIRDFResource* aMember,
                     if (cmp < 0)
                         left = ++index;
                     else if (cmp > 0)
-                        right = --index;
+                        right = index - 1;
                     else
                         break;
                 }