Double free when running compositor-proxy-cli on Ubuntu with Gnome

[bthiae2934]

I tried compositor-proxy-cli from gnome-terminal of Ubuntu and found that application crashed with SIGABRT. I investigated this issue and found that the following code has a double-free issue:

greenfield/packages/compositor-proxy/native/wayland/src/westfield-xwayland.c

Line 363 in 20b31ad

free(wxs);

greenfield/packages/compositor-proxy/native/wayland/src/westfield-xwayland.c

Line 454 in 20b31ad

free(westfield_xserver);

As you can see from these two code snippets, wxs is freed two times on failed case.