fixed prepare not resetting instr ptr on reloads

priv_include/UserScript/interpreter.h

@@ -171,6 +171,7 @@ namespace scripting {
 			std::vector<script_error> errors;
 			auto lexed = ast::lex(code, errors);
 			auto parsed = ast::parse(lexed, errors);
+			instruction_ptr = 0;
 			if (errors.empty()) {
 				bytecode = generate(errors, parsed, repeating);
 			}