Fixed retrieval of method overloads in case the provided function is an operator.

src/AST/Class.cs

@@ -201,6 +201,9 @@ namespace CppSharp.AST
 
         public override IEnumerable<Function> GetOverloads(Function function)
         {
+            if (function.IsOperator)
+                return Methods.Where(fn => fn.OperatorKind == function.OperatorKind);
+
             var methods = Methods.Where(m => m.Name == function.Name);
             if (methods.ToList().Count != 0)
                 return methods;

tests/Basic/Basic.h

@@ -323,4 +323,13 @@ namespace SomeNamespace
 	public:
 		virtual void AbstractMethod() = 0;
 	};
-}
+}
+
+// Test operator overloads
+class ClassWithOverloadedOperators
+{
+public:
+	operator char();
+	operator int();
+	operator short();
+};