Check ABI target compatibility for function pointers

This check was previously only performed on functions not function pointers.

Co-authored-by: Folkert <folkert@folkertdev.nl>

compiler/rustc_hir_analysis/src/check/mod.rs

@@ -73,7 +73,7 @@ pub mod wfcheck;
 
 use std::num::NonZero;
 
-pub use check::check_abi;
+pub use check::{check_abi, check_abi_fn_ptr};
 use rustc_data_structures::fx::{FxHashSet, FxIndexMap};
 use rustc_errors::{Diag, ErrorGuaranteed, pluralize, struct_span_code_err};
 use rustc_hir::def_id::{DefId, LocalDefId};