kvm: x86: use NULL instead of using plain integer as pointer

Sparse warnings removed:
warning: Using plain integer as NULL pointer

Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Message-Id: <20210305180816.GA488770@LEGION>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Muhammad Usama Anjum 2021-03-05 23:08:16 +05:00 • committed by Paolo Bonzini
commit 4691453406