src: remove unnecessary Isolate::GetCurrent() calls

These calls are unnecessary in Release mode but would still have
been included, so move them to the `DebugSealHandleScope` constructor.

PR-URL: #33298
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Author: addaleax

src/node_internals.h

@@ -246,9 +246,9 @@ class InternalCallbackScope {
 
 class DebugSealHandleScope {
  public:
-  explicit inline DebugSealHandleScope(v8::Isolate* isolate)
+  explicit inline DebugSealHandleScope(v8::Isolate* isolate = nullptr)
 #ifdef DEBUG
-    : actual_scope_(isolate)
+    : actual_scope_(isolate != nullptr ? isolate : v8::Isolate::GetCurrent())
 #endif
   {}
 

src/stream_base-inl.h

@@ -113,29 +113,29 @@ inline void StreamResource::RemoveStreamListener(StreamListener* listener) {
 }
 
 inline uv_buf_t StreamResource::EmitAlloc(size_t suggested_size) {
-  DebugSealHandleScope handle_scope(v8::Isolate::GetCurrent());
+  DebugSealHandleScope seal_handle_scope;
   return listener_->OnStreamAlloc(suggested_size);
 }
 
 inline void StreamResource::EmitRead(ssize_t nread, const uv_buf_t& buf) {
-  DebugSealHandleScope handle_scope(v8::Isolate::GetCurrent());
+  DebugSealHandleScope seal_handle_scope;
   if (nread > 0)
     bytes_read_ += static_cast<uint64_t>(nread);
   listener_->OnStreamRead(nread, buf);
 }
 
 inline void StreamResource::EmitAfterWrite(WriteWrap* w, int status) {
-  DebugSealHandleScope handle_scope(v8::Isolate::GetCurrent());
+  DebugSealHandleScope seal_handle_scope;
   listener_->OnStreamAfterWrite(w, status);
 }
 
 inline void StreamResource::EmitAfterShutdown(ShutdownWrap* w, int status) {
-  DebugSealHandleScope handle_scope(v8::Isolate::GetCurrent());
+  DebugSealHandleScope seal_handle_scope;
   listener_->OnStreamAfterShutdown(w, status);
 }
 
 inline void StreamResource::EmitWantsWrite(size_t suggested_size) {
-  DebugSealHandleScope handle_scope(v8::Isolate::GetCurrent());
+  DebugSealHandleScope seal_handle_scope;
   listener_->OnStreamWantsWrite(suggested_size);
 }