runconfig/opts: fix compilation issue

LK4D4 · LK4D4 · commit 93f57705110e · 2016-03-21T15:01:08.000-07:00
it was introduced with moby#20566 as a result of merge Signed-off-by: Alexander Morozov <lk4d4@docker.com>
diff --git a/runconfig/opts/parse.go b/runconfig/opts/parse.go
@@ -242,6 +242,7 @@ func Parse(cmd *flag.FlagSet, args []string) (*container.Config, *container.Host
 		entrypoint = strslice.StrSlice{*flEntrypoint}
 	}
 	// Validate if the given hostname is RFC 1123 (https://tools.ietf.org/html/rfc1123) compliant.
+	hostname := *flHostname
 	if hostname != "" {
 		matched, _ := regexp.MatchString("^(([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])\\.)*([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])$", hostname)
 		if !matched {

Original file line number	Diff line number	Diff line change
`@@ -242,6 +242,7 @@ func Parse(cmd flag.FlagSet, args []string) (container.Config, *container.Host`
`242`	`242`	`entrypoint = strslice.StrSlice{*flEntrypoint}`
`243`	`243`	`}`
`244`	`244`	`// Validate if the given hostname is RFC 1123 (https://tools.ietf.org/html/rfc1123) compliant.`
	`245`	`+ hostname := *flHostname`
`245`	`246`	`if hostname != "" {`
`246`	`247`	`matched, _ := regexp.MatchString("^(([[:alnum:]]\|[[:alnum:]][[:alnum:]\\-][[:alnum:]])\\.)([[:alnum:]]\|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])$", hostname)`
`247`	`248`	`if !matched {`