pids: Initialize leader_pid in init_task

This is cheap and no cost so we might as well.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
diff --git a/init/init_task.c b/init/init_task.c
index 74f60ba..7914ffb 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -33,6 +33,7 @@
 	},
 #endif
 	INIT_CPU_TIMERS(init_signals)
+	.leader_pid = &init_struct_pid,
 	INIT_PREV_CPUTIME(init_signals)
 };