Don't slice rethrow exception

Author: Blake-Madden

tinyexpr.cpp

@@ -2488,7 +2488,7 @@ te_expr* te_parser::te_compile(const std::string_view expression, std::set<te_va
         // parsed OK, but there was an evaluation error;
         // clean up and throw the message back up to compile()
         te_free(root);
-        throw exp;
+        throw;
         }
     m_errorPos = te_parser::npos;
     return root;