[FIX] cloc: avoid memory issue on big file

Before this commit:
Files that should be ignored in the manifest but aren't (js library for example)
it can happen that files have huge lines, the regex to substract the
comments will overuse memory.
For example, a file of 13M with a line of more that 8M characters, the
memory consumptions peak at 1.7G

The results might be different, but it's an acceptable compromise

closes odoo/odoo#120111

X-original-commit: 0e56e4a7
Signed-off-by: Thibault Francois <tfr@odoo.com>