[commit: ghc] ghc-8.6: #15387 Fix setting testsuite verbose to zero (655c617)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : ghc-8.6
Link       : http://ghc.haskell.org/trac/ghc/changeset/655c6175268352f00f142f98a8b58488cc953480/ghc

>---------------------------------------------------------------

commit 655c6175268352f00f142f98a8b58488cc953480
Author: Antti Siponen <antti.siponen at iki.fi>
Date:   Sun Jul 15 21:47:42 2018 +0200

    #15387 Fix setting testsuite verbose to zero
    
    (cherry picked from commit 0d6ef6d71e5077eb217456fdd8a515a8cab724ad)


>---------------------------------------------------------------

655c6175268352f00f142f98a8b58488cc953480
 testsuite/driver/runtests.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testsuite/driver/runtests.py b/testsuite/driver/runtests.py
index 811a6e0..4e275c5 100644
--- a/testsuite/driver/runtests.py
+++ b/testsuite/driver/runtests.py
@@ -104,7 +104,7 @@ if args.threads:
     config.threads = args.threads
     config.use_threads = True
 
-if args.verbose:
+if args.verbose is not None:
     config.verbose = args.verbose
 config.skip_perf_tests = args.skip_perf_tests