message: disable implicit conversion from number to asset structure
diff: @@ -27,7 +27,7 @@ namespace eosio {
  uint64_t amount = 0;
  symbol_name symbol = S(4,EOS);
  - asset( uint64_t a = 0, uint64_t s = S(4,EOS))
  + explicit asset( uint64_t a = 0, uint64_t s = S(4,EOS))
  :amount(a),symbol(s){}
  