Zelaya v. Secretary, Florida Dept. of Corrections, ___ F.3d ___, 2015 WL 4998431 (11th Cir. Aug. 24, 2015) (district court committed no error in declining to sua sponte recharacterize pro se inmate's 2241 habeas petition as 2255 motion to vacate, over his objection; and inmate failed to establish that 2255 motion to vacate was inadequate or ineffective to test legality of his detention).