Fix upload without content-type
Fix upload without content-type

lixxu/sanic,lixxu/sanic,yunstanford/sanic,channelcat/sanic,ashleysommer/sanic,r0fls/sanic,ai0/sanic,r0fls/sanic,ashleysommer/sanic,yunstanford/sanic,Tim-Erwin/sanic,jrocketfingers/sanic,channelcat/sanic,ai0/sanic,Tim-Erwin/sanic,channelcat/sanic,yunstanford/sanic,jrocketfingers/sanic,ashleysommer/sanic,lixxu/sanic,yunstanford/sanic,lixxu/sanic,channelcat/sanic