This patch fixes sparse warnings "Using plain integer as NULL pointer" in
sta_h25.c
Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>