Fix for CLIENT_MULTI_RESULTS constant value

Author: mpain

mysql-async/src/main/scala/com/github/mauricio/async/db/mysql/util/MySQLIO.scala

@@ -21,7 +21,7 @@ object MySQLIO {
   final val CLIENT_PROTOCOL_41 = 0x0200
   final val CLIENT_CONNECT_WITH_DB = 0x0008
   final val CLIENT_TRANSACTIONS = 0x2000
-  final val CLIENT_MULTI_RESULTS = 0x200000
+  final val CLIENT_MULTI_RESULTS = 0x20000
   final val CLIENT_LONG_FLAG = 0x0001
   final val CLIENT_PLUGIN_AUTH = 0x00080000
   final val CLIENT_SECURE_CONNECTION = 0x00008000