[PATCH] Misc minor fixes

- examples/aio-read needs size=
- check ->zone_skip before doing division, ->zone_size is always set.
diff --git a/examples/aio-read b/examples/aio-read
index 832e006..ed8cb2c 100644
--- a/examples/aio-read
+++ b/examples/aio-read
@@ -3,6 +3,7 @@
 ioengine=libaio
 rw=randread
 bs=128k
+size=512m
 
 [/data1/file1]
 iodepth=4
diff --git a/fio.c b/fio.c
index 5dbe9c3..493aa64 100644
--- a/fio.c
+++ b/fio.c
@@ -1933,7 +1933,7 @@
 		if (td->verify)
 			bytes_total += td->total_io_size;
 
-		if (td->zone_size)
+		if (td->zone_size && td->zone_skip)
 			bytes_total /= (td->zone_skip / td->zone_size);
 	
 		bytes_done += td->io_bytes[DDIR_READ] +td->io_bytes[DDIR_WRITE];