improve GOOS=tamago test coverage

Author: abarisani

src/crypto/tls/handshake_client_test.go

@@ -2625,7 +2625,7 @@ func TestClientHandshakeContextCancellation(t *testing.T) {
 	if err != context.Canceled {
 		t.Errorf("Unexpected client handshake error: %v", err)
 	}
-	if runtime.GOARCH == "wasm" {
+	if runtime.GOARCH == "wasm" || runtime.GOOS == "tamago" {
 		t.Skip("conn.Close does not error as expected when called multiple times on WASM")
 	}
 	err = cli.Close()

src/crypto/tls/handshake_server_test.go

@@ -1978,7 +1978,7 @@ func TestServerHandshakeContextCancellation(t *testing.T) {
 	if err != context.Canceled {
 		t.Errorf("Unexpected server handshake error: %v", err)
 	}
-	if runtime.GOARCH == "wasm" {
+	if runtime.GOARCH == "wasm" || runtime.GOOS == "tamago" {
 		t.Skip("conn.Close does not error as expected when called multiple times on WASM")
 	}
 	err = conn.Close()