resolve comments

Author: yinyiqian1

tests/test_mpt_utility.cpp

@@ -1,6 +1,6 @@
 #include "test_utils.h"
 
-#include <cassert>
+#include <cstring>
 #include <iomanip>
 #include <iostream>
 #include <secp256k1_mpt.h>
@@ -368,4 +368,4 @@ main()
     std::cout << "\n[SUCCESS] All assertions passed!" << std::endl;
 
     return 0;
-}
+}