src/CommandLine.hs: import ExitFailure explicitly.

diff --git a/src/CommandLine.hs b/src/CommandLine.hs
index 687a1c41586f8e71236b00f7c3fe076a7ab2621e..7eb41d10cf33c8f69f03418d04392e0b1cc8d589 100644 (file)
--- a/src/CommandLine.hs
+++ b/src/CommandLine.hs
@@ -32,7 +32,7 @@ import System.Console.CmdArgs (
 
 import System.Console.CmdArgs.Explicit ( process )
 import System.Environment ( getArgs, withArgs )
-import System.Exit ( ExitCode(..), exitWith )
+import System.Exit ( ExitCode( ExitFailure ), exitWith )
 import System.IO ( hPutStrLn, stderr )
 
 import ExitCodes ( exit_arg_parse_failed )