Initialize smokeperl_object properly

This patch fixes this build failure with GCC 6:

/builddir/build/BUILD/Qt-0.96.0/qtcore/src/util.cpp:2248:59: error: cannot convert 'bool' to 'void*' in initialization
         static smokeperl_object nothis = { 0, 0, 0, false };
                                                           ^
CPAN RT#111630

Signed-off-by: Petr Písař <ppisar@redhat.com>
Signed-off-by: Chris Burel <chrisburel@gmail.com>