Applied patch by Artur Wyszynski:

* Added virtual destructor to BRefFilter in case the GCC version is 3 or newer
  (can't do it for GCC 2.95.3, since that would break binary compatibility
  AFAIKT)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24986 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/storage/FilePanel.h

@@ -18,6 +18,9 @@ struct stat;
 
 class BRefFilter {
 	public:
+#if (GCC_VERSION >= 3000)
+		virtual		 ~BRefFilter() {};
+#endif
 		virtual	bool Filter(const entry_ref* ref, BNode* node,
 						struct stat* stat, const char* mimeType) = 0;
 };