Fixing bug where end limit would not be calculated

Fixing bug where end limit would not be calculated

In the pager object, if the query was constructed
such that the index was a fully qualified field then
the 'past the end' index reference would not get
computed.

This is because $mIndexField stores the FQ field name
but $mPastTheEndRow is indexed on the non FQ name.
Therefore a warning would be generated due to a non
existent array key.

Change-Id: I52e1cbc8f7dad07de1ba5ba3bdfa2d107dfb4d93