Hi Victor

I can confirm the patch is working on both 32-bit and 64-bit systems running Python3.7.6, with both platforms returning the same result after patching - many thanks!

#### UNPATCHED, 32-bit (RPi3+)
LibreELEC (Milhouse.testing): devel-20200213234919-#0213f-g70b69eb (RPi2.arm)
rpi22:~ # python -c "import sys, http.cookiejar; print(sys.version); print(http.cookiejar.time2isoz(2322923767))"
3.7.6 (default, Feb 14 2020, 00:35:22)
[GCC 9.2.0]
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.7/cookiejar.py", line 101, in time2isoz
OverflowError: timestamp out of range for platform time_t

#### PATCHED, 32-bit (RPi3+)
LibreELEC (Milhouse.testing): devel-20200214012134-#0213g-g70b69eb (RPi2.arm)
rpi22:~ # python -c "import sys, http.cookiejar; print(sys.version); print(http.cookiejar.time2isoz(2322923767))"
3.7.6 (default, Feb 14 2020, 01:22:50)
[GCC 9.2.0]
2043-08-11 16:36:07Z

#### UNPATCHED, 64-bit (x86_64)
LibreELEC (Milhouse.next): devel-20200213053123-#0212x-g67aedc9 (Generic.x86_64)
NUC:~ # python -c "import sys, http.cookiejar; print(sys.version); print(http.cookiejar.time2isoz(2322923767))"
3.7.6 (default, Feb 12 2020, 20:54:03)
[GCC 9.2.0]
2043-08-11 16:36:07Z

#### PATCHED, 64-bit (x86_64)
LibreELEC (Milhouse.next): devel-20200214005606-#0214-g70b69eb (Generic.x86_64)
NUC:~ # python -c "import sys, http.cookiejar; print(sys.version); print(http.cookiejar.time2isoz(2322923767))"
3.7.6 (default, Feb 14 2020, 01:00:37)
[GCC 9.2.0]
2043-08-11 16:36:07Z