Fix redundant keep-alive/refresh after session error on compose page (#5500)

CHANGELOG

@@ -57,6 +57,7 @@ CHANGELOG Roundcube Webmail
 - Managesieve: Unhide advanced rule controls if there are inputs with errors
 - Managesieve: Display warning message when filter form contains errors
 - Control search engine crawlers via X-Robots-Tag header instead of <meta> and robots.txt (#5098)
+- Fix redundant keep-alive/refresh after session error on compose page (#5500)
 - Fix flickering of header topline in min-mode (#5426)
 - Fix bug where folders list would scroll to top when clicking on subscription checkbox (#5447)
 - Fix decoding of GB2312/GBK text when iconv is not installed (#5448)

program/js/app.js

@@ -8486,6 +8486,12 @@ function rcube_webmail()
     if (this.env.action == 'compose') {
       this.save_compose_form_local();
       this.compose_skip_unsavedcheck = true;
+      // stop keep-alive and refresh processes
+      this.env.session_lifetime = 0;
+      if (this._keepalive)
+        clearInterval(this._keepalive);
+      if (this._refresh)
+        clearInterval(this._refresh);
     }
     else if (redirect_url) {
       setTimeout(function(){ ref.redirect(redirect_url, true); }, 2000);