widl: Structures and arrays with pointers should be complex when generating code for 64-bit platforms.

The non-complex variants depend on the wire size of the
structure/array matching the buffer size, but this no longer applies
when pointers are 8 bytes instead of 4.

mshtml: Check for the container's doc being NULL in nsTooltipListener_OnShowTooltip and nsTooltipListener_OnHideTooltip.

They could be called after NSContainer_Release is called.