fix issue 19295 - ICE when taking address of member function passed as template parameter

[ghost]

A check missed after getRightThis() for DelegateExp. As a consequence the CTFE engine was faced to unexpected stuff when evaluating the pragma.

[dlang-bot]

Thanks for your pull request and interest in making D better, @Basile-z! We are looking forward to reviewing it, and you should be hearing from a maintainer soon.
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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	19295	normal	ICE when taking address of member function passed as template parameter

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "stable + dmd#10123"

[ghost]

@dlang-bot is on a free day maybe ? It doesn't work for dlang-community either.