test/Doctests.hs: add an explicit export list to silence a GHC warning.

diff --git a/test/Doctests.hs b/test/Doctests.hs
index 0c9ec0a3fd7c7715df72fdf1382d85dedb7cc646..22124b13cc5cd7d57c7c055420e5be07e9b04f59 100644 (file)
--- a/test/Doctests.hs
+++ b/test/Doctests.hs
@@ -1,4 +1,4 @@
-module Main
+module Main (main)
 where
 
 import Test.DocTest (doctest)