Replace side effects expressions inside address_of [blocks: #4471]

[tautschnig]

The C++ front-end may generate expressions that take the address of side
effects, such as temporary objects or assignments, when a reference is
taken. These side effects need to be replaced, just as is done outside
address_of expressions.

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[allredj]

✔️
Passed Diffblue compatibility checks (cbmc commit: 888e290).
Build URL: https://travis-ci.com/diffblue/test-gen/builds/106489432