refstore/chain: Remove casts unsupported by the contract

1 files changed, 0 insertions, 13 deletions

diff --git a/refstore/chain/chain.go b/refstore/chain/chain.go
index bebe183f..b84aac55 100644
--- a/refstore/chain/chain.go
+++ b/refstore/chain/chain.go
@@ -60,24 +60,11 @@ func (chain *Chain) ResolveFully(name string) (ref.Detached, error) {
 		switch resolved := resolved.(type) {
 		case ref.Detached:
 			return resolved, nil
-		case *ref.Detached:
-			if resolved == nil {
-				return ref.Detached{}, fmt.Errorf("refstore: backend returned nil detached reference")
-			}
-			return *resolved, nil
 		case ref.Symbolic:
 			if resolved.Target == "" {
 				return ref.Detached{}, fmt.Errorf("refstore: symbolic reference %q has empty target", resolved.Name())
 			}
 			cur = resolved.Target
-		case *ref.Symbolic:
-			if resolved == nil {
-				return ref.Detached{}, fmt.Errorf("refstore: backend returned nil symbolic reference")
-			}
-			if resolved.Target == "" {
-				return ref.Detached{}, fmt.Errorf("refstore: symbolic reference %q has empty target", resolved.Name())
-			}
-			cur = resolved.Target
 		default:
 			return ref.Detached{}, fmt.Errorf("refstore: unsupported reference type %T", resolved)
 		}