-Werror,-Wlogical-not-parentheses

...lets assume that was a stray "!" (originally introduced with
fb171e3886c0c28c61f1e1960f7b427644a501fe "add second Restore function for
CntntIdxStore"), esp. given "make check" works fine when removing it.  But let
SweetShark have a look at it in any case.

Change-Id: I4d804a5b416a39055613d3104d31cdc314940ef1