Merge branch 'aa/reap-transport-child-processes' into seen

A few code paths that spawned child processes for network
connection weren't wait(2)ing for their children and letting "init"
reap them instead; they have been tightened.

* aa/reap-transport-child-processes:
  transport-helper, connect: use clean_on_exit to reap children on abnormal exit

Author: gitster

connect.c

@@ -1054,6 +1054,8 @@ static struct child_process *git_proxy_connect(int fd[2], char *host)
 	strvec_push(&proxy->args, port);
 	proxy->in = -1;
 	proxy->out = -1;
+	proxy->clean_on_exit = 1;
+	proxy->wait_after_clean = 1;
 	if (start_command(proxy))
 		die(_("cannot start proxy %s"), git_proxy_command);
 	fd[0] = proxy->out; /* read from proxy stdout */
@@ -1515,6 +1517,8 @@ struct child_process *git_connect(int fd[2], const char *url,
 		}
 		strvec_push(&conn->args, cmd.buf);
 
+		conn->clean_on_exit = 1;
+		conn->wait_after_clean = 1;
 		if (start_command(conn))
 			die(_("unable to fork"));
 

transport-helper.c

@@ -154,6 +154,8 @@ static struct child_process *get_helper(struct transport *transport)
 
 	helper->trace2_child_class = helper->args.v[0]; /* "remote-<name>" */
 
+	helper->clean_on_exit = 1;
+	helper->wait_after_clean = 1;
 	code = start_command(helper);
 	if (code < 0 && errno == ENOENT)
 		die(_("unable to find remote helper for '%s'"), data->name);