bundlerepo: avoid exception in __del__ when the bundle doesn't exist
$ hg -R bundle://foo.hg
abort: No such file or directory: foo.hg
Exception exceptions.AttributeError: "'bundlerepository' object has no attribute 'bundlefile'" in <bound method bundlerepository.__del__ of <mercurial.bundlerepo.bundlerepository object at 0xa7ab9fac>> ignored
#!/bin/sh
hg init a
cd a
echo bar > foo
hg add foo
hg ci -m 'add foo' -d '1000000 0'
echo foobar > foo
hg ci -m 'change foo' -d '1000001 0'
echo 'quiet:'
hg --quiet diff -r 0 -r 1
echo
echo 'normal:'
hg diff -r 0 -r 1
echo
echo 'verbose:'
hg --verbose diff -r 0 -r 1
echo
echo 'debug:'
hg --debug diff -r 0 -r 1
echo