http2,src: remove duplicate words in comments

lib/internal/http2/core.js

@@ -366,7 +366,7 @@ function onFrameError(id, type, code) {
 
 // Receiving a GOAWAY frame from the connected peer is a signal that no
 // new streams should be created. If the code === NGHTTP2_NO_ERROR, we
-// are going to send our our close, but allow existing frames to close
+// are going to send our close, but allow existing frames to close
 // normally. If code !== NGHTTP2_NO_ERROR, we are going to send our own
 // close using the same code then destroy the session with an error.
 // The goaway event will be emitted on next tick.
@@ -421,7 +421,7 @@ function requestOnConnect(headers, options) {
   if (session.destroyed)
     return;
 
-  // If the session was closed while waiting for for the connect, destroy
+  // If the session was closed while waiting for the connect, destroy
   // the stream and do not continue with the request.
   if (session.closed) {
     const err = new errors.Error('ERR_HTTP2_GOAWAY_SESSION');

src/async_wrap.cc

@@ -329,7 +329,7 @@ static void PromiseHook(PromiseHookType type, Local<Promise> promise,
     if (env->execution_async_id() == wrap->get_async_id()) {
       // This condition might not be true if async_hooks was enabled during
       // the promise callback execution.
-      // Popping it off the stack can be skipped in that case, because is is
+      // Popping it off the stack can be skipped in that case, because it is
       // known that it would correspond to exactly one call with
       // PromiseHookType::kBefore that was not witnessed by the PromiseHook.
       env->async_hooks()->pop_async_id(wrap->get_async_id());

src/inspector_agent.h

@@ -83,7 +83,7 @@ class Agent {
     return io_.get();
   }
 
-  // Can only be called from the the main thread.
+  // Can only be called from the main thread.
   bool StartIoThread(bool wait_for_connect);
 
   // Calls StartIoThread() from off the main thread.

src/node_api.h

@@ -177,7 +177,7 @@ NAPI_EXTERN napi_status napi_create_range_error(napi_env env,
                                                 napi_value msg,
                                                 napi_value* result);
 
-// Methods to get the the native napi_value from Primitive type
+// Methods to get the native napi_value from Primitive type
 NAPI_EXTERN napi_status napi_typeof(napi_env env,
                                     napi_value value,
                                     napi_valuetype* result);

src/node_main.cc

@@ -34,7 +34,7 @@ int wmain(int argc, wchar_t *wargv[]) {
     exit(ERROR_EXE_MACHINE_TYPE_MISMATCH);
   }
 
-  // Convert argv to to UTF8
+  // Convert argv to UTF8
   char** argv = new char*[argc + 1];
   for (int i = 0; i < argc; i++) {
     // Compute the size of the required buffer