MAP: Fix email subFolder listing for mandatory folders

Email subFolder Listing implementation fetch initial list
for all folders with parent folderId value -1.
Mandatory folders required to be included as per MAP Spec
(that maynot be present on email account) are also added
with -1 folderId by default, due to which always initial list
is fetched for subFolder listing under later.
Handle the initial list logic to check for "msg" folder
instead of parent folderId alone.

Change-Id: I653388945d6522fae89e38ff300e02cf1435bde3
CRs-Fixed: 1018430
1 file changed