From 731e0332cf6131f24c3039ae88c8495f7ab5a2cb Mon Sep 17 00:00:00 2001
From: Lars Lehtonen <lars.lehtonen@gmail.com>
Date: Wed, 23 Oct 2019 09:34:32 -0700
Subject: [PATCH] common: collect dropped error

---
 common/iso_config.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/iso_config.go b/common/iso_config.go
index 3c878e128..0edd86bd8 100644
--- a/common/iso_config.go
+++ b/common/iso_config.go
@@ -162,6 +162,10 @@ func (c *ISOConfig) Prepare(ctx *interpolate.Context) (warnings []string, errs [
 	}
 	if c.ISOChecksumType == "file" {
 		u, err := url.Parse(c.ISOUrls[0])
+		if err != nil {
+			errs = append(errs, fmt.Errorf("error parsing URL <%s>: %s",
+				c.ISOUrls[0], err))
+		}
 		wd, err := os.Getwd()
 		if err != nil {
 			log.Printf("get working directory: %v", err)