xlib cairo утечка памяти

#include "xlib_cairo_window.h"
#include <iostream>
void xlib_cairo_window::paint() {
    XEvent e;
    cairo_show_page(cr);
    while(1) {
        XNextEvent(dpy, &e);
        if(e.type==Expose && e.xexpose.count<1) {
            //paint(cs);
        } else if(e.type==ButtonPress) break;
    }
}
 
xlib_cairo_window::xlib_cairo_window(int x,int y,const char* pc){
    if(!(dpy=XOpenDisplay(NULL))) {
        std::cerr<<"ERROR: Could not open display"<<std::endl;
        exit(1);
    }
    scr=DefaultScreen(dpy);
    rootwin=RootWindow(dpy, scr);
 
    win=XCreateSimpleWindow(dpy, rootwin, 1, 1, x, y, 0, 
            BlackPixel(dpy, scr), BlackPixel(dpy, scr));
    XStoreName(dpy, win, pc);
    XSelectInput(dpy, win, ExposureMask|ButtonPressMask);
    XMapWindow(dpy, win);
    surface=cairo_xlib_surface_create(dpy, win, 
            DefaultVisual(dpy, 0), x, y);
        cr = cairo_create (surface);
 
        cairo_set_source_rgb (cr, 0.0, 0.0, 1.0);
    cairo_set_line_width (cr, 2);
}
 
xlib_cairo_window::~xlib_cairo_window(){
        cairo_destroy(cr);
        cairo_surface_destroy(surface);
    XCloseDisplay(dpy);
}