codec/avcodec/vaapi{_x11}.c: call vlc_va_Initialize/vlc_va_Terminate

Use vlc_va_* wrapper to call vaInitialize and vaTerminate

modules/codec/avcodec/vaapi.c

@@ -445,11 +445,9 @@ static void Close( vlc_va_vaapi_t *p_va )
 
     if( p_va->i_config_id != VA_INVALID_ID )
         vaDestroyConfig( p_va->conn->p_display, p_va->i_config_id );
-    if( p_va->conn->p_display )
-        vaTerminate( p_va->conn->p_display );
-    if( p_va->conn->p_display_x11 )
-        XCloseDisplay( p_va->conn->p_display_x11 );
+    vlc_va_Terminate( p_va->conn );
 }
+
 static void Delete( vlc_va_t *p_external )
 {
     vlc_va_vaapi_t *p_va = vlc_va_vaapi_Get(p_external);

modules/codec/avcodec/vaapi_x11.c

@@ -257,11 +257,10 @@ void CloseVaapiX11 (vlc_object_t *obj)
     {
         XFlush(sys->conn->p_display_x11);
         XSync(sys->conn->p_display_x11, False);
-        XCloseDisplay(sys->conn->p_display_x11);
-        sys->conn->p_display_x11 = NULL;
     }
     if (sys->embed)
         vout_display_DeleteWindow (vd, sys->embed);
+    vlc_va_Terminate(sys->conn);
     free(vd->sys);
 }