Confusing comment on a JS branch instruction

[ecm-pushbx]

sectorlisp/sectorlisp.S

Lines 113 to 114 in fc6fa33

	test %si,%si # set sf=1 if cons
	js .PrintList # jump if not cons

This says:

• "set sf=1 if cons"
• js (jump if sign bit set)
• "jump if not cons"

The js jump actually jumps if sf=1 so there is a contradiction here. I don't understand the code enough to determine which comment is wrong.