debug set threshold (#9137)

* debug set threshold

* add void required for interface.

std/cpp/NativeSsl.hx

@@ -24,6 +24,9 @@ package cpp;
 
 @:buildXml('<include name="${HXCPP}/src/hx/libs/ssl/Build.xml"/>')
 extern class NativeSsl {
+	@:native("_hx_ssl_debug_set")
+	public static function ssl_debug_set(int:Int):Void;
+	
 	@:native("_hx_ssl_new")
 	public static function ssl_new(conf:Dynamic):Dynamic;