Bug 671726 - operationFailedFolderBusy -- another should be another, not an other. r=bwinton+neil

mail/locales/en-US/chrome/messenger/messenger.properties

@@ -103,7 +103,7 @@ compactFolderWriteFailed=The folder '%S' could not be compacted because writing
 filterFolderWriteFailed=The messages could not be filtered to folder '%S' because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again.
 copyMsgWriteFailed=The messages could not be moved or copied to folder '%S' because writing to folder failed. To gain disk space, from the File menu, first choose Empty Trash, and then choose Compact Folders, and then try again.
 cantMoveMsgWOBodyOffline=While working offline, you cannot move or copy messages that were not downloaded for offline use. From the Mail window, open the File menu, choose Offline, then uncheck Work Offline, and then try again.
-operationFailedFolderBusy=The operation failed because an other operation is using the folder. Please wait for that operation to finish and then try again.
+operationFailedFolderBusy=The operation failed because another operation is using the folder. Please wait for that operation to finish and then try again.
 folderRenameFailed=The folder could not be renamed. Perhaps the folder is being reparsed, or the new name is not a valid folder name.
 # LOCALIZATION NOTE(verboseFolderFormat): %1$S is folder name, %2$S is server name
 verboseFolderFormat=%1$S on %2$S

suite/locales/en-US/chrome/mailnews/messenger.properties

@@ -106,7 +106,7 @@ compactFolderWriteFailed=The folder '%S' could not be compacted because writing
 filterFolderWriteFailed=The messages could not be filtered to folder '%S' because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again.
 copyMsgWriteFailed=The messages could not be moved or copied to folder '%S' because writing to folder failed. To gain disk space, from the File menu, first choose Empty Trash, and then choose Compact Folders, and then try again.
 cantMoveMsgWOBodyOffline=While working offline, you cannot move or copy messages that were not downloaded for offline use. From the Mail window, open the File menu, choose Offline, then uncheck Work Offline, and then try again.
-operationFailedFolderBusy=The operation failed because an other operation is using the folder. Please wait for that operation to finish and then try again.
+operationFailedFolderBusy=The operation failed because another operation is using the folder. Please wait for that operation to finish and then try again.
 folderRenameFailed=The folder could not be renamed. Perhaps the folder is being reparsed, or the new name is not a valid folder name.
 # LOCALIZATION NOTE(verboseFolderFormat): %1$S is folder name, %2$S is server name
 verboseFolderFormat=%1$S on %2$S