Compatibility with TB 91: copyFileMessage(), bug 1715433.

addon/content/TbHelper.js

@@ -1,6 +1,5 @@
 // This file is under GNU General Public License 3.0
 
-var { AppConstants } = ChromeUtils.import("resource://gre/modules/AppConstants.jsm");
 var { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
 var { MailServices } = ChromeUtils.import("resource:///modules/MailServices.jsm");
 var { fixIterator } = ChromeUtils.import("chrome://pEp4Tb/content/modules/iteratorUtils.jsm");
@@ -107,7 +106,7 @@ const TbHelper = {
         try {
           controller.log.info(`Deleting old message with key ${msgHdr.messageKey}`);
           let msgArray;
-          if (parseInt(AppConstants.MOZ_APP_VERSION, 10) >= 85) {
+          if (controller.MOZ_APP_VERSION >= 85) {
             msgArray = [msgHdr];
           } else {
             msgArray = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
@@ -164,7 +163,12 @@ const TbHelper = {
 
     const msgCopyService = Cc["@mozilla.org/messenger/messagecopyservice;1"]
       .getService(Ci.nsIMsgCopyService);
-    msgCopyService.CopyFileMessage(tempFile, msgFolder, msgHdr, false, 0, "", copyListener, null);
+    if (controller.MOZ_APP_VERSION >= 91) {
+      // Made lowercase in https://bugzilla.mozilla.org/show_bug.cgi?id=1715433.
+      msgCopyService.copyFileMessage(tempFile, msgFolder, msgHdr, false, 0, "", copyListener, null);
+    } else {
+      msgCopyService.CopyFileMessage(tempFile, msgFolder, msgHdr, false, 0, "", copyListener, null);
+    }
   },
 
   isOwnIdentity(email) {