strengthen region validation

Change-Id: I75ee7bc4dd7a2f5357ac8994a23bc8b8bfb6eb44
diff --git a/include/private/ui/RegionHelper.h b/include/private/ui/RegionHelper.h
index 421bdda..8c190dd 100644
--- a/include/private/ui/RegionHelper.h
+++ b/include/private/ui/RegionHelper.h
@@ -26,10 +26,10 @@
 template<typename RECT>
 class region_operator
 {
+public:
     typedef typename RECT::value_type TYPE;    
     static const TYPE max_value = 0x7FFFFFF;
 
-public:
     /* 
      * Common boolean operations:
      * value is computed as 0b101 op 0b110