Fix a condition where the quit channel of the tcp checker was not called

Author: Juanjo Alvarez

Diff for: internal/sockstate/sockstate.go

@@ -36,7 +36,7 @@ func GetInodeSockState(port int, inode uint64) (SockState, error) {
 
 	switch len(socks) {
 	case 0:
-		fallthrough
+		return Broken, nil
 	case 1:
 		switch socks[0].State {
 		case CloseWait:

Diff for: server/handler.go

@@ -239,6 +239,7 @@ rowLoop:
 
 		if r.RowsAffected == rowsBatch {
 			if err := callback(r); err != nil {
+				close(quit)
 				return err
 			}
 
@@ -272,13 +273,12 @@ rowLoop:
 		}
 		timer.Reset(waitTime)
 	}
+	close(quit)
 
 	if err := rows.Close(); err != nil {
 		return err
 	}
 
-	close(quit)
-
 	// Even if r.RowsAffected = 0, the callback must be
 	// called to update the state in the go-vitess' listener
 	// and avoid returning errors when the query doesn't

Diff for: server/handler_test.go

@@ -165,7 +165,6 @@ func TestHandlerKill(t *testing.T) {
 	require.Len(handler.c, 2)
 	require.Equal(conntainer1, handler.c[1])
 	require.Equal(conntainer2, handler.c[2])
-
 	assertNoConnProcesses(t, e, conn2.ConnectionID)
 
 	ctx1 := handler.sm.NewContextWithQuery(conn1, "SELECT 1")