V4L/DVB (4674): Use NULL instead of 0 for ptrs

Use NULL instead of 0 for pointer value, eliminate sparse warnings.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
index ed3e810..0512166 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
@@ -19,6 +19,7 @@
  *
  */
 
+#include <linux/kernel.h>
 #include "pvrusb2-i2c-core.h"
 #include "pvrusb2-hdw-internal.h"
 #include "pvrusb2-debug.h"
@@ -89,7 +90,8 @@
 
 const struct pvr2_i2c_op *pvr2_i2c_get_op(unsigned int idx)
 {
-	if (idx >= sizeof(ops)/sizeof(ops[0])) return 0;
+	if (idx >= ARRAY_SIZE(ops))
+		return NULL;
 	return ops[idx];
 }