[calls] application: fix 'tel:' URL handling with escaped symbols

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit e8895e9387cb77c30806e406d913445b83db2a0b
Author: Andrey Skvortsov <andrej skvortzov gmail com>
Date:   Sun Jun 12 01:19:50 2022 +0300

    application: fix 'tel:' URL handling with escaped symbols
    
    It's common to have spaces or other separator characters in telephone
    numbers. If tel: link (example: tel:+1 855-698-1150) is clicked in browser all
    unsupported characters are escaped (example: tel:+1%20(855)%20698-11-50).

 src/calls-application.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/calls-application.c b/src/calls-application.c
index 24c491c6..db2ec5f9 100644
--- a/src/calls-application.c
+++ b/src/calls-application.c
@@ -309,10 +309,11 @@ open_tel_uri (CallsApplication *self,
               const char       *uri)
 {
   const char *number = NULL;
+  g_autofree char* uri_str = g_uri_unescape_string(uri, NULL);
 
   g_debug ("Opening tel URI `%s'", uri);
 
-  number = &uri[4]; // tel:NUMBER
+  number = &uri_str[4]; // tel:NUMBER
   if (!number || !*number) {
     g_autofree char *msg =
       g_strdup_printf (_("Tried dialing invalid tel URI `%s'"), uri);