vlc_arrays: Adding a C++ helper to clean a container

Signed-off-by: Rémi Duraffort <ivoire@videolan.org>

include/vlc_arrays.h

@@ -617,4 +617,20 @@ vlc_dictionary_remove_value_for_key( const vlc_dictionary_t * p_dict, const char
     /* No key was found */
 }
 
+#ifdef __cplusplus
+// C++ helpers
+template <typename T>
+void vlc_delete_all( T &container )
+{
+    typename T::iterator it = container.begin();
+    while ( it != container.end() )
+    {
+        delete *it;
+        ++it;
+    }
+    container.clear();
+}
+
+#endif
+
 #endif