Setting bwscanner min_exits to 1 causes no exits to be selected

It looks like there's an off-by-one error in the code that handles this minimun:

diff --git a/NetworkScanners/BwAuthority/bwauthority_child.py b/NetworkScanners/BwAuthority/bwauthority_child.py
index a36728f..248c6d0 100755
--- a/NetworkScanners/BwAuthority/bwauthority_child.py
+++ b/NetworkScanners/BwAuthority/bwauthority_child.py
@@ -67,7 +68,7 @@ __selmgr = PathSupport.SelectionManager(
      use_guards=False,
      exit_ports=[443],
      order_by_ratio=True, # XXX: may be a poor idea for PID control?
-      min_exits=10)
+      min_exits=1)

# exit code to indicate scan completion
# make sure to update this in bwauthority.py as well