type database/sql.releaseConn

5 uses

	database/sql (current package)
		sql.go#L1948: type releaseConn func(error)
		sql.go#L1979: func (c *Conn) grabConn(context.Context) (*driverConn, releaseConn, error) {
		sql.go#L2050: 	var release releaseConn
		sql.go#L2222: func (tx *Tx) grabConn(ctx context.Context) (*driverConn, releaseConn, error) {
		sql.go#L2556: 	grabConn(context.Context) (*driverConn, releaseConn, error)