kernel/fork.c: remove unneeded variable initialization in copy_process()

This initialization of is not needed so just remove it.
Signed-off-by: NMariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

kernel/fork.c

@@ -978,7 +978,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 					struct pid *pid)
 {
 	int retval;
-	struct task_struct *p = NULL;
+	struct task_struct *p;
 	int cgroup_callbacks_done = 0;
 
 	if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))