Adjust $_SERVER[CONTENT_TYPE] to ignore if the server is not setting that
Adjust $_SERVER[CONTENT_TYPE] to ignore if the server is not setting that

Line 520 broke an existing implementation I had running because the $_SERVER['CONTENT_TYPE'] is not being set by my server.  I'm not sure if this is a wide ranging issue, but this fixed the problem for me locally.
emonzain/PiProcessors,ulimartinez/hackdfw,ulimartinez/hackdfw,ulimartinez/hackdfw,sofadesign/limonade,dateutli/hackdfw,emonzain/PiProcessors,emonzain/PiProcessors,dateutli/hackdfw,dateutli/hackdfw,dateutli/hackdfw,jnadaud/limonade,ulimartinez/hackdfw