match: small tweak to PatternMatcher.visit_children_set
This makes it a bit more efficient (avoid a computation in case of early
return), and in my opinion clearer.
#!/usr/bin/env python3
import errno
import os
import sys
for f in sys.argv[1:]:
try:
print(f, '->', os.readlink(f))
except OSError as err:
if err.errno != errno.EINVAL:
raise
print(f, '->', f, 'not a symlink')
sys.exit(0)