Warning for delete call

[paulocoutinhox]

What OS are you using (uname -a, or Windows version)?

macos bigsur

What programming language are you using (C/C++/Go/Rust)?

clang 13
xcode 13
c++

What did you expect to see and what you saw instead?

compile without warnings

Problem

webview.h:541:3: warning: delete called on non-final 'webview::webview' that has virtual functions but non-virtual destructor [-Wdelete-non-abstract-non-virtual-dtor]
  delete static_cast<webview::webview *>(w);
  ^
1 warning generated.