warning C4245 signed/unsigned mismatch

Change-Id: If28543252ee2265e9edd7d7963c1751bd21e754d
warning C4245 signed/unsigned mismatch

Change-Id: Ibff6c806c287a2303cdf3b1942d5d5014a73bd30
helpcontent2: somebody messed up the submodule again...

Change-Id: I7c7888ffcc613c1627ad2ed69db68ff64f596a85