patch 7.4.993
Problem: Test 87 is flaky on AppVeyor.
Solution: Reduce the minimum background thread count.
diff --git a/src/testdir/test87.in b/src/testdir/test87.in
index 7ad05de..41d4065 100644
--- a/src/testdir/test87.in
+++ b/src/testdir/test87.in
@@ -367,7 +367,9 @@
:sleep 1
:py3 t.running = False
:py3 t.join()
-:py3 l[0] = t.t > 7 # check if the background thread is working
+:" Check if the background thread is working. Count should be 10, but on a
+:" busy system (AppVeyor) it can be much lower.
+:py3 l[0] = t.t > 4
:py3 del time
:py3 del threading
:py3 del t