and shut-up valgrind:
Conditional jump or move depends on uninitialised value(s)
at 0xB5AFB05: shell_surface_configure (shell.c:2162)
by 0x407B0C: surface_attach (compositor.c:1225)
by 0x621FA13: ffi_call_unix64
by 0x621F434: ffi_call
by 0x4E3D3F5: wl_closure_invoke (connection.c:758)
by 0x4E3786C: wl_client_connection_data (wayland-server.c:255)
by 0x4E3AA19: wl_event_source_fd_dispatch (event-loop.c:78)
by 0x4E3B533: wl_event_loop_dispatch (event-loop.c:460)
by 0x4E38D2C: wl_display_run (wayland-server.c:907)
by 0x40B5DD: main (compositor.c:2748)
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
70e5c9cc42