create parent directories if they don't exist

mailnews/imap/src/nsImapIncomingServer.cpp

@@ -1228,7 +1228,7 @@ nsresult nsImapIncomingServer::GetUnverifiedFolders(nsISupportsArray *aFoldersAr
 
 nsresult nsImapIncomingServer::GetUnverifiedSubFolders(nsIFolder *parentFolder, nsISupportsArray *aFoldersArray, PRInt32 *aNumUnverifiedFolders)
 {
-	nsresult rv = NS_ERROR_FAILURE;
+	nsresult rv = NS_OK;
 
 	nsCOMPtr <nsIMsgImapMailFolder> imapFolder = do_QueryInterface(parentFolder);
 	PRBool verified;
@@ -1264,7 +1264,11 @@ nsresult nsImapIncomingServer::GetUnverifiedSubFolders(nsIFolder *parentFolder,
 			{
 				nsCOMPtr <nsIFolder> childFolder = do_QueryInterface(child, &rv);
 				if (NS_SUCCEEDED(rv) && childFolder)
-					GetUnverifiedSubFolders(childFolder, aFoldersArray, aNumUnverifiedFolders);
+				{
+					rv = GetUnverifiedSubFolders(childFolder, aFoldersArray, aNumUnverifiedFolders);
+					if (!NS_SUCCEEDED(rv))
+						break;
+				}
 			}
 		}
 		delete simpleEnumerator;

mailnews/imap/src/nsImapMailFolder.cpp

@@ -496,10 +496,10 @@ NS_IMETHODIMP nsImapMailFolder::CreateClientSubfolderInfo(const char *folderName
 	rv = pathSpec->GetFileSpec(&path);
 	if (NS_FAILED(rv)) return rv;
 
-	if (!path.Exists())
-	{
-		path.CreateDir();
-	}
+//	if (!path.Exists())
+//	{
+//		path.CreateDir();
+//	}
 
 	rv = CreateDirectoryForFolder(path);
 	if(NS_FAILED(rv))
@@ -2899,6 +2899,7 @@ nsImapMailFolder::CreateDirectoryForFolder(nsFileSpec &path) //** dup
 		if(NS_FAILED(rv))
 			return rv;
 
+		nsFileSpec tempPath(path, PR_TRUE);	// create incoming directories.
 		//If that doesn't exist, then we have to create this directory
 		if(!path.IsDirectory())
 		{