lib: Tidy up some FIXMEs
lib: Tidy up some FIXMEs

MathieuDuponchelle/uhttpmock,pwithnall/uhttpmock,MathieuDuponchelle/uhttpmock,pwithnall/uhttpmock,Distrotech/uhttpmock,MathieuDuponchelle/uhttpmock,Distrotech/uhttpmock