Add include guard around scoped_minijail.h

Add an include guard around scoped_minijail.h so that there is no compiler error
if it gets included twice transitively.

BUG=none
TEST=include scoped_minijail.h twice and see that it still compiles properly

Change-Id: Ia9ee6e5d22be433fef1c98e3ae56061e1afed647
Signed-off-by: Chirantan Ekbote <chirantan@google.com>
1 file changed