Add mediacontrol_exception_cleanup() consistent with mediacontrol_exception_init().

include/vlc/mediacontrol.h

@@ -86,7 +86,14 @@ VLC_PUBLIC_API void
   mediacontrol_exception_init( mediacontrol_Exception *exception );
 
 /**
- * Free an exception structure.
+ * Clean up an existing exception structure after use.
+ * \param p_exception the exception to clean up.
+ */
+VLC_PUBLIC_API void
+mediacontrol_exception_cleanup( mediacontrol_Exception *exception );
+
+/**
+ * Free an exception structure created with mediacontrol_exception_create().
  * \return the exception
  */
 VLC_PUBLIC_API void mediacontrol_exception_free(mediacontrol_Exception *exception);

src/control/mediacontrol_util.c

@@ -281,12 +281,16 @@ mediacontrol_exception_init( mediacontrol_Exception *exception )
 }
 
 void
-mediacontrol_exception_free( mediacontrol_Exception *exception )
+mediacontrol_exception_cleanup( mediacontrol_Exception *exception )
 {
-    if( ! exception )
-        return;
-
+    if( exception )
         free( exception->message );
+}
+
+void
+mediacontrol_exception_free( mediacontrol_Exception *exception )
+{
+    mediacontrol_exception_cleanup( exception );
     free( exception );
 }