util: eliminate the possibility of returning None from `versiontuple()`
This fixes the following error flagged by pytype:
File "/mnt/c/Users/Matt/hg/mercurial/extensions.py", line 228, in load: unsupported operand types for > [unsupported-operands]
Primitive types 'Optional[tuple]' and 'curver: Optional[tuple]' are not comparable.
Differential Revision: https://phab.mercurial-scm.org/D11473
--- a/mercurial/util.py Mon Sep 20 11:03:46 2021 -0400
+++ b/mercurial/util.py Mon Sep 20 11:05:30 2021 -0400
@@ -1225,6 +1225,8 @@
if n == 4:
return (vints[0], vints[1], vints[2], extra)
+ raise error.ProgrammingError(b"invalid version part request: %d" % n)
+
def cachefunc(func):
'''cache the result of function calls'''