EGL: move disconnect to surface dtor

This change moves the call to native_window_api_disconnect from
eglDestroySurface to the egl_surface_t destructor.  The egl_surface_t
can outlive the external EGLSurface if eglDestroySurface is called while
the surface is made current on a thread.

Change-Id: I0df6117a5633c2a19935fe356579abdd76fc471f
diff --git a/opengl/libs/EGL/egl_object.h b/opengl/libs/EGL/egl_object.h
index 3459a8a..d2b7378 100644
--- a/opengl/libs/EGL/egl_object.h
+++ b/opengl/libs/EGL/egl_object.h
@@ -125,7 +125,15 @@
 
 class egl_surface_t: public egl_object_t {
 protected:
-    ~egl_surface_t() {}
+    ~egl_surface_t() {
+        ANativeWindow* const window = win.get();
+        if (window != NULL) {
+            native_window_set_buffers_format(window, 0);
+            if (native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL)) {
+                LOGE("EGLNativeWindowType %p disconnected failed", window);
+            }
+        }
+    }
 public:
     typedef egl_object_t::LocalRef<egl_surface_t, EGLSurface> Ref;
 
@@ -232,4 +240,3 @@
 // ----------------------------------------------------------------------------
 
 #endif // ANDROID_EGL_OBJECT_H
-