Make code better readable.
Patch by Ladislav Michl, 14 Sep 2005
diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index 0f4f9b7..d0fae6b 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -707,7 +707,7 @@
 #if defined(CFG_MEMTEST_SCRATCH)
 	vu_long *dummy = (vu_long*)CFG_MEMTEST_SCRATCH;
 #else
-	vu_long *dummy = NULL;
+	vu_long *dummy = 0;	/* yes, this is address 0x0, not NULL */
 #endif
 	int	j;
 	int iterations = 1;