At least log any failure from HTTP Serve()

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 3.4.1 (unreleased)
+- [PR #170](https://github.com/rqlite/rqlite/pull/170): Log any failure to call Serve() on HTTP service.
+
 ## 3.4.0 (July 7th 2016)
 - [PR #159](https://github.com/rqlite/rqlite/pull/159): All HTTP responses set X-RQLITE-VERSION.
 

http/service.go

@@ -177,7 +177,7 @@ func (s *Service) Start() error {
 	go func() {
 		err := server.Serve(s.ln)
 		if err != nil {
-			return
+			s.logger.Println("HTTP service Serve() returned:", err.Error())
 		}
 	}()
 	s.logger.Println("service listening on", s.addr)