While backporting this to 4.5 and 4.4 I noticed that making the object
non-dependent shouldn't be conditionalized.
Tested x86_64-pc-linux-gnu, applying to 4.6 and trunk. Applying the two
patches folded together on 4.4 and 4.5.
commit a39f5c2859bb16af16945830f3c0802c40441b70
Author: Jason Merri
The code in build_offset_ref_from_tree was assuming that any ->*
involved calling a bound pointer to member function. But that's not
necessarily the case: it could be calling a pointer to function or
functor by way of a pointer to data member or overloaded ->* operator.
Tested x86_64-pc-linux
