sample shell does not link against shared lib due to latest change

Review URL: http://codereview.chromium.org/7366004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8652 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

samples/shell.cc

@@ -95,10 +95,12 @@ class SourceGroup {
                   begin_offset_(0),
                   end_offset_(0) { }
 
+#if !(defined(USING_V8_SHARED) || defined(V8_SHARED))
   ~SourceGroup() {
     delete next_semaphore_;
     delete done_semaphore_;
   }
+#endif  // USING_V8_SHARED
 
   void Begin(char** argv, int offset) {
     argv_ = const_cast<const char**>(argv);