update test for unrelated repo.
--- a/tests/test-unrelated-pull
+++ b/tests/test-unrelated-pull
@@ -16,4 +16,5 @@ hg add b
hg commit -m "b" -u b -d "1000000 0"
hg pull ../a
+hg pull -f ../a
hg heads
--- a/tests/test-unrelated-pull.out
+++ b/tests/test-unrelated-pull.out
@@ -1,6 +1,9 @@
pulling from ../a
searching for changes
-warning: pulling from an unrelated repository!
+abort: repository is unrelated
+pulling from ../a
+searching for changes
+warning: repository is unrelated
adding changesets
adding manifests
adding file changes