[Qemu-block] [PATCH] qemu-img: Fix crash in amend invocation

[Max Reitz]

Example:
$ ./qemu-img create -f qcow2 /tmp/t.qcow2 64M
$ ./qemu-img amend -f qcow2 -o backing_file=/tmp/t.qcow2, -o help \
    /tmp/t.qcow2

This should not crash. This actually is tested by iotest 082, but not
caught due to the segmentation fault being silent (which is something
that needs to be fixed, too).

Reported-by: Dr. David Alan Gilbert <address@hidden>
Cc: qemu-stable <address@hidden>
Signed-off-by: Max Reitz <address@hidden>
---
 qemu-img.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/qemu-img.c b/qemu-img.c
index 75f4ee4..3ddb391 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2930,8 +2930,7 @@ static int img_amend(int argc, char **argv)
             case 'o':
                 if (!is_valid_option_list(optarg)) {
                     error_report("Invalid option list: %s", optarg);
-                    ret = -1;
-                    goto out;
+                    return 1;
                 }
                 if (!options) {
                     options = g_strdup(optarg);
-- 
2.4.3