e_comp_wl_input: add check for ec->mouse.in when gets cursor_set
e_comp_wl_input: add check for ec->mouse.in when gets cursor_set

code sync with upstream

Signed-off-by: Duna Oh <duna.oh@samsung.com>

Change-Id: Ib0eea52fb6b152c6213223fbcea5cdda7cf5f480

tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment