qemu-io: fix segment fault when the image format is qed

From: Zhi Yong Wu <[email protected]>

[root@f15 qemu]# qemu-io -c info /home/zwu/work/misc/rh6.img format name: qed
cluster size: 64 KiB
vm state offset: 0.000000 bytes
Segmentation fault (core dumped)

This reason is same as the former patch

---
 qemu-io.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

index 0249be4..3189530 100644
@@ -1856,6 +1856,8 @@ int main(int argc, char **argv)
 
     bdrv_init();
 
+    qemu_init_main_loop();
+
     /* initialize commands */
     quit_init();
     help_init();

1.7.6