vl: Report failure to sandbox at most once

It's reported once per -sandbox on.  Stop on the first failure, like
we do for other options.

Not fixed: "-sandbox on -sandbox off" should leave the sandbox off.
It doesn't.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 66ccd06be8..dd56a82f09 100644
--- a/vl.c
+++ b/vl.c
@@ -3797,7 +3797,7 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
-    if (qemu_opts_foreach(qemu_find_opts("sandbox"), parse_sandbox, NULL, 0)) {
+    if (qemu_opts_foreach(qemu_find_opts("sandbox"), parse_sandbox, NULL, 1)) {
         exit(1);
     }