[Qemu-block] [PATCH] curl: fix compilation on OpenBSD

[Paolo Bonzini]

EPROTO is not found in OpenBSD.   We usually use EIO when no better
errno is available, do that here too.

Reported-by: Peter Maydell <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 block/curl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/curl.c b/block/curl.c
index e83dcd8..34dbd33 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -377,7 +377,7 @@ static void curl_multi_check_completion(BDRVCURLState *s)
                     }
 
                     qemu_mutex_unlock(&s->mutex);
-                    acb->common.cb(acb->common.opaque, -EPROTO);
+                    acb->common.cb(acb->common.opaque, -EIO);
                     qemu_mutex_lock(&s->mutex);
                     qemu_aio_unref(acb);
                     state->acb[i] = NULL;
-- 
2.9.3