QS: Only hide grid if there is detail to show

If the animation ends at the 'same' time as handleShowDetail is
running it is possible for the grid content to get cleared by the
animation callback just after it is shown in handleShowDetail.
This checks mDetailRecord to avoid that chance.

Bug: 18009138
Change-Id: Ia2951f44b5a1470321bf6580daf33917bbcb1ffd
1 file changed