Promises and MySql seem to not return

[Mike Kilmer]

Hey, folks.

We have a MySql database we need to connect to on this project, and having 
trouble getting asynchronous requests to work.

If we use `dbconn->typed_query`, we get the expected response.

With promise_query, seeing: `SQL status: still running...`

Chris Angelico promises (pun intended) to pry further into it, and I hope you 
don't mind more spam from me in the meantime.

mixed q = dbconn->promise_query("select 1 from dual");
werror("Promise: %O\n", q);
mixed result = await(q);
werror("Result: %O\n", result);
werror("Rows: %O\n", result->get());
}

WARNING: MYSQL_OPT_RECONNECT is deprecated and will be removed in a future 
version.
Query result: ({ /* 1 element */
    ([ /* 1 element */
      "1": 1
    ])
})
Create future mysql(/*mysql-test.gotagtech.com via TCP/IP*/) "select 1 from 
dual" 0
Create future result mysql(/*mysql-test.gotagtech.com via TCP/IP*/) "select 1 
from dual" 0
Callback got ({ /* 1 element */
    ({ /* 1 element */
        1
    })
})
Callback got 0
Future succeeded "select 1 from dual"
Promise: __builtin.Sql.Promise(no

Promise: __builtin.Sql.Promise(no future,FutureResult from query: "select 1 
from dual", bindings: 0
recordcount: 1
SQL status: still running...)

Thanks much and have a good and great one.

Mike