Fixed tautological error conditions

Removed err handling where err's value can't possibly have changed.

Signed-off-by: Christian Muehlhaeuser <muesli@gmail.com>

Author: muesli

plumbing/format/commitgraph/encoder.go

@@ -56,9 +56,6 @@ func (e *Encoder) Encode(idx Index) error {
 			return err
 		}
 	}
-	if err != nil {
-		return err
-	}
 	return e.encodeChecksum()
 }
 

plumbing/transport/server/server.go

@@ -286,11 +286,6 @@ func (s *rpSession) updateReferences(req *packp.ReferenceUpdateRequest) {
 				continue
 			}
 
-			if err != nil {
-				s.setStatus(cmd.Name, err)
-				continue
-			}
-
 			ref := plumbing.NewHashReference(cmd.Name, cmd.New)
 			err := s.storer.SetReference(ref)
 			s.setStatus(cmd.Name, err)

remote.go

@@ -906,7 +906,7 @@ func (r *Remote) updateLocalReferenceStorage(
 		updated = true
 	}
 
-	if err == nil && forceNeeded {
+	if forceNeeded {
 		err = ErrForceNeeded
 	}