Travis Barker's son Landon, 18, takes comfort in new love Charli D'Amelio, 18, as they walk arm in arm amid his father's health ordeal

Travis Barker's son Landon, 18, took comfort in his new girlfriend Charli D'Amelio, 18, during his father's health ordeal with pancreatitis, which saw the Blink-182 dru…