Minor linting changes

conn.go

@@ -1159,6 +1159,7 @@ func (c *Conn) start(started chan<- struct{}, inboundBufferSize int, config *Con
 	}
 }
 
+//nolint:gocognit
 func addrFromAnswerHeader(answer dnsmessage.Resource) (*netip.Addr, error) {
 	switch answer.Header.Type {
 	case dnsmessage.TypeA:
@@ -1167,18 +1168,18 @@ func addrFromAnswerHeader(answer dnsmessage.Resource) (*netip.Addr, error) {
 			if ok {
 				addr = addr.Unmap() // do not want 4-in-6
 				return &addr, nil
-			} else {
-				return nil, fmt.Errorf("failed to create netip.Addr from TypeA resource")
 			}
+
+			return nil, fmt.Errorf("failed to create netip.Addr from TypeA resource")
 		}
 	case dnsmessage.TypeAAAA:
 		if a, ok := answer.Body.(*dnsmessage.AAAAResource); ok {
 			addr, ok := netip.AddrFromSlice(a.AAAA[:])
 			if ok {
 				return &addr, nil
-			} else {
-				return nil, fmt.Errorf("failed to create netip.Addr from TypeAAAA resource")
 			}
+
+			return nil, fmt.Errorf("failed to create netip.Addr from TypeAAAA resource")
 		}
 	}