When trying to resolve the address of an overloaded expression,

When trying to resolve the address of an overloaded expression,
only form pointers-to-member if the expression has the appropriate
form.  This avoids assertions later on on invalid code, but also
allows us to properly resolve mixed-staticity overloads.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111987 91177308-0d34-0410-b5e6-96231b3b80d8