qseecom: Fix kernel panic

There exist a  possibility for "handle" input being NULL.  We need
to check for this before dereferencing it.

Change-Id: I50c1c6855ad303e05b52e6e37d774551d9db4fc4
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
1 file changed