From 1fbb36c34aefcd835b2d742cfccebeabec674c59 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Chmielowski?= <pchmielowski@process-one.net>
Date: Fri, 29 Jun 2018 11:13:16 +0200
Subject: [PATCH] Fix misc:try_url for erlang < R20

---
 src/misc.erl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/misc.erl b/src/misc.erl
index 7aaebffc9..2e1b3f008 100644
--- a/src/misc.erl
+++ b/src/misc.erl
@@ -223,7 +223,11 @@ try_read_file(Path) ->
 %%      Fails with `badarg` otherwise. The function is intended for usage
 %%      in configuration validators only.
 -spec try_url(binary() | string()) -> binary().
-try_url(URL) ->
+try_url(URL0) ->
+    URL = case URL0 of
+	V when is_binary(V) -> binary_to_list(V);
+	_ -> URL0
+    end,
     case http_uri:parse(URL) of
 	{ok, {Scheme, _, _, _, _, _}} when Scheme /= http, Scheme /= https ->
 	    ?ERROR_MSG("Unsupported URI scheme: ~s", [URL]),