Fix unintentional compose window resize (#1489114)

Conflicts:

	program/js/app.js

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix unintentional compose window resize (#1489114)
 - Fix performance regression in text wrapping function (#1489133)
 - Fix connection to posgtres db using unix socket (#1489132)
 - Fix handling of comma when adding contact from contacts widget (#1489107)

program/js/app.js

@@ -3021,7 +3021,8 @@ function rcube_webmail()
     }
     else {
       this.redirect(url);
-      window.resizeTo(Math.max(1150, $(window).width()), Math.max(900, $(window).height()));
+      if (this.env.extwin)
+        window.resizeTo(Math.max(1150, $(window).width()), Math.max(900, $(window).height()));
     }
   };