[PATCH v2 09/11] coio: fix file descriptor leak on accept

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

coio_accept() calls evio_setsockopt_client, which
throws an exception and just accepted socket leaks.
Yes, server socket is protected, but not new client
socket.

The bug existed even before exceptions are removed
from evio.
---
 src/coio.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/coio.cc b/src/coio.cc
index 82bf72e69..c45e72507 100644
--- a/src/coio.cc
+++ b/src/coio.cc
@@ -256,8 +256,10 @@ coio_accept(struct ev_io *coio, struct sockaddr *addr,
 		int fd = sio_accept(coio->fd, addr, &addrlen);
 		if (fd >= 0) {
 			if (evio_setsockopt_client(fd, addr->sa_family,
-						   SOCK_STREAM) != 0)
+						   SOCK_STREAM) != 0) {
+				close(fd);
 				diag_raise();
+			}
 			return fd;
 		}
 		if (sio_is_error_fatal(fd))
-- 
2.17.2 (Apple Git-113)