coredump: use SUID_DUMPABLE_ENABLED rather than hardcoded 1

Cosmetic. Change setup_new_exec() and task_dumpable() to use
SUID_DUMPABLE_ENABLED for /bin/grep.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 67925a7..cceaab0 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -103,7 +103,7 @@
 	if (mm)
 		dumpable = get_dumpable(mm);
 	task_unlock(task);
-	if(dumpable == 1)
+	if (dumpable == SUID_DUMPABLE_ENABLED)
 		return 1;
 	return 0;
 }