blockjob: remove unnecessary check

!job is always checked prior to the call, drop it from here.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20170508141310.8674-2-pbonzini@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
diff --git a/blockjob.c b/blockjob.c
index 6e48932..23022b3 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -480,7 +480,7 @@
 
 bool block_job_user_paused(BlockJob *job)
 {
-    return job ? job->user_paused : 0;
+    return job->user_paused;
 }
 
 void coroutine_fn block_job_pause_point(BlockJob *job)