[warnigns] fix lots of bugprone warnings

* update-settings-tests: properly cast types in getter/setter
* wtypes: fix PHANDLE definition
* wStream: fix INT64 write function warnings
* Simplify HANDLE copy in channels, just assign after proper cast

server/proxy/pf_server.c

@@ -270,7 +270,7 @@ static BOOL pf_server_setup_channels(freerdp_peer* peer)
 
 	rc = TRUE;
 fail:
-	free(accepted_channels);
+	free((void*)accepted_channels);
 	return rc;
 }