Minor refactoring to accomodate changes in Google's internal code tree.

git-svn-id: https://snappy.googlecode.com/svn/trunk@57 03e5f5b5-db94-4691-08a0-1a8bf15f6143

snappy-sinksource.h

@@ -60,6 +60,7 @@ class Sink {
   // The default implementation always returns the scratch buffer.
   virtual char* GetAppendBuffer(size_t length, char* scratch);
 
+
  private:
   // No copying
   Sink(const Sink&);