size-stats: fix bug when parsing file names with comma
The size-stats script fails when the usb_modeswitch_data is enabled,
because this package installs files that contain commas in their
name. However, the size-stats script also uses comma as a separator for
its CSV files, causing a "ValueError: too many values to unpack" in:
pkg, fpath = l.split(",")
Fix this by splitting only the two fields that need to be split.
The bug was reported by Matthias <porto.rio@gmx.net>, who also suggested
a fix.
Fixes bug #9136.
Reported-by: Matthias <porto.rio@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>