staging: atomisp: Removes pointer comparison to 0 in ia_css_queue_enqueue

Repaces pointer comparison to 0 with NULL in ia_css_queue_enqueue
to improve code readability. Identified with coccinelle script
'badzero.cocci'.
Signed-off-by: Tahia Khan <tahia.khan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/queue/src/queue.c

@@ -88,7 +88,7 @@ int ia_css_queue_enqueue(
 			uint32_t item)
 {
 	int error = 0;
-	if (0 == qhandle)
+	if (NULL == qhandle)
 		return EINVAL;
 
 	/* 1. Load the required queue object */