Delimiter not auto detected correctly with an additional line in quoted field

[rlargman]

Similar to #681.

However, the initial file that does work has multiple new lines in the quoted field. Then if you add another line in the field (no other changes except for the additional line in each field), it no longer auto detects the ; delimiter correctly. I've tested this in papaparse.com/demo as well.

Working file:
working.csv

Not working file:
notWorking.csv