travelmate: support meta-refresh with single-quote

Currently `travelmate` only support `<meta` tag
if it contains `"`. This updates `travelmate.sh` to support
`'` as well.

```html
<meta...content='1; url=
```

Signed-off-by: Kamil Trzciński <ayufan@ayufan.eu>

net/travelmate/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=travelmate
 PKG_VERSION:=2.0.7
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 PKG_LICENSE:=GPL-3.0-or-later
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>
 

net/travelmate/files/travelmate.sh

@@ -491,7 +491,7 @@ f_net() {
 				result="net cp '${json_cp}'"
 			else
 				if [ "${json_rc}" = "200" ] || [ "${json_rc}" = "204" ]; then
-					html_cp="$(printf "%s" "${html_raw}" | awk 'match(tolower($0),/^.*<meta[ \t]+http-equiv=["]*refresh.*[ \t;]url=/){print substr(tolower($0),RLENGTH+1)}' | awk 'BEGIN{FS="[:/]"}{printf "%s",$4;exit}')"
+					html_cp="$(printf "%s" "${html_raw}" | awk 'match(tolower($0),/^.*<meta[ \t]+http-equiv=['\''"]*refresh.*[ \t;]url=/){print substr(tolower($0),RLENGTH+1)}' | awk 'BEGIN{FS="[:/]"}{printf "%s",$4;exit}')"
 					if [ -n "${html_cp}" ]; then
 						result="net cp '${html_cp}'"
 					else