Ignore ENOENT from realpath(), origin probably moved

The svc_find_by_pidfile() function is called async from the pidfile
plugin, so by the time the queue is processed the origin may have
moved or been removed even.  Safe to ignore.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/svc.c

@@ -398,7 +398,8 @@ svc_t *svc_find_by_pidfile(char *fn)
 
 	pid_runpath(fn, adjpath, sizeof(adjpath));
 	if (!realpath(adjpath, fnpath)) {
-		_pe("adjpath: %s, errno %d", adjpath, errno);
+		if (errno != ENOENT)
+			_pe("adjpath: %s, errno %d", adjpath, errno);
 		return NULL;
 	}