call lo_FreeLayoutData when we're done relaying out -- stop leaking memory on resizes

lib/layout/layrelay.c

@@ -238,6 +238,7 @@ void LO_RelayoutOnResize(MWContext *context, int32 width, int32 height, int32 le
 	if(!state->top_state->is_binary)
 		FE_SetProgressBarPercent(context, 100);
 
+        lo_FreeLayoutData(context, state);
 	FE_FinishedLayout(context);
 
 	/* Tell FE to redraw window */