Use \r\n\r\n on Windows

Author: pvdrz

bindgen/lib.rs

@@ -927,9 +927,9 @@ impl Bindings {
         if !self.options.disable_header_comment {
             let version =
                 option_env!("CARGO_PKG_VERSION").unwrap_or("(unknown version)");
-            writeln!(
+            write!(
                 writer,
-                "/* automatically generated by rust-bindgen {version} */{NL}",
+                "/* automatically generated by rust-bindgen {version} */{NL}{NL}",
             )?;
         }