[gcc r17-2232] gccrs: remove useless diagnostic

https://gcc.gnu.org/g:ea5b142c31e8154954b0c22200b03c20b3b3d6f5

commit r17-2232-gea5b142c31e8154954b0c22200b03c20b3b3d6f5
Author: Philip Herron <[email protected]>
Date:   Wed Jun 24 16:24:20 2026 +0100

    gccrs: remove useless diagnostic
    
    gcc/rust/ChangeLog:
    
            * typecheck/rust-hir-type-check-item.cc (TypeCheckItem::visit): remove error_at
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/issue-2479.rs: update test
    
    Signed-off-by: Philip Herron <[email protected]>

Diff:
---
 gcc/rust/typecheck/rust-hir-type-check-item.cc | 6 +-----
 gcc/testsuite/rust/compile/issue-2479.rs       | 1 -
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/gcc/rust/typecheck/rust-hir-type-check-item.cc b/gcc/rust/typecheck/rust-hir-type-check-item.cc
index 1299e29b0f90..d8f2b8754e89 100644
--- a/gcc/rust/typecheck/rust-hir-type-check-item.cc
+++ b/gcc/rust/typecheck/rust-hir-type-check-item.cc
@@ -723,11 +723,7 @@ TypeCheckItem::visit (HIR::Function &function)
     {
       auto resolved = TypeCheckType::Resolve (function.get_return_type ());
       if (resolved->get_kind () == TyTy::TypeKind::ERROR)
-	{
-	  rust_error_at (function.get_locus (),
-			 "failed to resolve return type");
-	  return;
-	}
+	return;
 
       ret_type = resolved->clone ();
       ret_type->set_ref (
diff --git a/gcc/testsuite/rust/compile/issue-2479.rs b/gcc/testsuite/rust/compile/issue-2479.rs
index 8536228ee979..b835a87d8715 100644
--- a/gcc/testsuite/rust/compile/issue-2479.rs
+++ b/gcc/testsuite/rust/compile/issue-2479.rs
@@ -9,7 +9,6 @@ enum Dragon {
 
 fn oblivion() -> Dragon::Born {
 // { dg-error "expected type, found variant of .Dragon::Born." "" { target *-*-* } .-1 }
-// { dg-error "failed to resolve return type" "" { target *-*-* } .-2 }
     Dragon::Born
 }