socket: if we fail to create an instantiated service for a socket, don't put the socket in failure mode

An incoming connection that is immediately terminated might result in
getpeername() or a similar call failing. Hence it is quite possible that
while we are setting up an instantiated service for a socket we might
get an error and we shouldn't take this as hint to take the listening
socket down.

https://bugs.freedesktop.org/show_bug.cgi?id=45297
https://bugzilla.novell.com/show_bug.cgi?id=741590

TODO

@@ -18,6 +18,12 @@ Bugfixes:
 
 Features:
 
+* add DeleteSocketsOnStop=yes|no option to socket units
+
+* add shutdown inhibit API for usage by libvirt and friends
+
+* journal: store euid in journal if it differs from uid
+
 * support chrony in addition to ntpd in timedated
 
 * journal: extend sd-journal.h logging calls to implicitly log function names/line numbers/...

src/socket.c

@@ -1491,7 +1491,6 @@ static void socket_enter_running(Socket *s, int cfd) {
 
 fail:
         log_warning("%s failed to queue socket startup job: %s", UNIT(s)->id, bus_error(&error, r));
-        socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
 
         if (cfd >= 0)
                 close_nointr_nofail(cfd);