- Prevent javascript error if TinyMCE is not initialized (#1487862)

program/js/app.js

@@ -3021,11 +3021,11 @@ function rcube_webmail()
   this.compose_field_hash = function(save)
   {
     // check input fields
-    var value_to = $("[name='_to']").val();
-    var value_cc = $("[name='_cc']").val();
-    var value_bcc = $("[name='_bcc']").val();
-    var value_subject = $("[name='_subject']").val();
-    var str = '';
+    var ed, str = '',
+      value_to = $("[name='_to']").val(),
+      value_cc = $("[name='_cc']").val(),
+      value_bcc = $("[name='_bcc']").val(),
+      value_subject = $("[name='_subject']").val();
 
     if (value_to)
       str += value_to+':';
@@ -3036,9 +3036,8 @@ function rcube_webmail()
     if (value_subject)
       str += value_subject+':';
 
-    var editor = tinyMCE.get(this.env.composebody);
-    if (editor)
-      str += editor.getContent();
+    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)))
+      str += ed.getContent();
     else
       str += $("[name='_message']").val();