patch 7.4.993
Problem: Test 87 is flaky on AppVeyor.
Solution: Reduce the minimum background thread count.
diff --git a/src/testdir/test86.in b/src/testdir/test86.in
index ae8ee3e..4714451 100644
--- a/src/testdir/test86.in
+++ b/src/testdir/test86.in
@@ -370,7 +370,9 @@
:sleep 1
:py t.running = False
:py t.join()
-:py 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.
+:py l[0] = t.t > 4
:py del time
:py del threading
:py del t