includes/std: Fixed NullString not including null terminator and not checking for string end correctly

includes/std/string.pat

@@ -1,6 +1,7 @@
 #pragma once
 
 import std.io;
+import std.mem;
 
 /*!
     Libray to interact with strings.
@@ -35,7 +36,8 @@ namespace auto std::string {
         @tparam DataType The type of the characters.
     */
     struct NullStringBase<DataType> {
-        DataType string[while($[$] != 0x00)];
+        DataType string[while(std::mem::read_unsigned($, sizeof(DataType)) != 0x00)];
+        DataType null_terminator;
     } [[sealed, format("std::string::impl::format_string"), transform("std::string::impl::format_string")]];
 
     /**