Bug #368867 --> spell check results from previous messages show up in the suggestions list for the inline spell checker when using a cached compose window. sr=bienvenu

mail/components/compose/content/MsgComposeCommands.js

@@ -259,6 +259,8 @@ var gComposeRecyclingListener = {
 
     // Stop InlineSpellCheckerUI so personal dictionary is saved
     enableInlineSpellCheck(false);
+    // clear any suggestions in the context menu
+    InlineSpellCheckerUI.clearSuggestionsFromMenu();
            
     //Reset editor
     EditorResetFontAndColorAttributes();