Fix content-length not being parsed as long
Fix content-length not being parsed as long

The method getBodySize() returns a long. Parsing ints limited the range.

QumuloMe/nanohttpd,ouya/nanohttpd,WilliamDo/nanohttpd,vnnv/nanohttpd_vnnv,QumuloMe/nanohttpd,WilliamDo/nanohttpd,ouya/nanohttpd,NanoHttpd/nanohttpd,LordFokas/nanohttpd,LordFokas/nanohttpd,NanoHttpd/nanohttpd,vnnv/nanohttpd_vnnv