http2: Fix error stream write followed by destroy

lib/internal/http2/core.js

@@ -176,7 +176,9 @@ function debugStream(id, sessionType, message, ...args) {
 }
 
 function debugStreamObj(stream, message, ...args) {
-  debugStream(stream[kID], stream[kSession][kType], message, ...args);
+  const session = stream[kSession];
+  const type = session ? session[kType] : undefined;
+  debugStream(stream[kID], type, message, ...args);
 }
 
 function debugSession(sessionType, message, ...args) {

test/parallel/test-http2-destroy-after-write.js

@@ -0,0 +1,37 @@
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto) {
+  common.skip('missing crypto');
+}
+
+const http2 = require('http2');
+const assert = require('assert');
+
+const server = http2.createServer();
+
+server.on('session', common.mustCall(function(session) {
+  session.on('stream', common.mustCall(function(stream) {
+    stream.on('end', common.mustCall(function() {
+      this.respond({
+        ':status': 200
+      });
+      this.write('foo');
+      this.destroy();
+    }));
+    stream.resume();
+  }));
+}));
+
+server.listen(0, function() {
+  const client = http2.connect(`http://localhost:${server.address().port}`);
+  const stream = client.request({ ':method': 'POST' });
+  stream.on('response', common.mustCall(function(headers) {
+    assert.strictEqual(headers[':status'], 200);
+  }));
+  stream.on('close', common.mustCall(() => {
+    client.close();
+    server.close();
+  }));
+  stream.resume();
+  stream.end();
+});