Avoid strict aliasing warning on function pointers

Cast via an ordinary function pointer rather than a function pointer
reference to avoid the warning.

Also make the pointer in `Func_t` explicit rather than implicit (deduced
into the `Func_t` type) to make it clearer what is going on here.

llarp/win32/dll.hpp

@@ -14,12 +14,12 @@ namespace llarp::win32
     /// throws if the function does not exist in the DLL we openned.
     template <typename Func_t>
     void
-    init(std::string name, Func_t& func)
+    init(std::string name, Func_t*& func)
     {
       auto ptr = GetProcAddress(m_Handle, name.c_str());
       if (not ptr)
         throw win32::error{fmt::format("function '{}' not found", name)};
-      func = reinterpret_cast<Func_t&>(ptr);
+      func = reinterpret_cast<Func_t*>(ptr);
     }
 
    public: