tests: skip RFC1991 tests for gnupg 2.1

diff --git a/t/t4201-shortlog.sh b/t/t4201-shortlog.sh
index 565c020c45434bf151d7a142ebe1a1cca3299ab4..7600a3e3e8f4fab47abd68a29bb06defb6bbce02 100755 (executable)
--- a/t/t4201-shortlog.sh
+++ b/t/t4201-shortlog.sh
@@ -93,7 +93,7 @@ test_expect_success 'output from user-defined format is re-wrapped' '
        test_cmp expect log.predictable
 '
 
-test_expect_success NOT_MINGW 'shortlog wrapping' '
+test_expect_success !MINGW 'shortlog wrapping' '
        cat >expect <<\EOF &&
 A U Thor (5):
       Test
@@ -114,7 +114,7 @@ EOF
        test_cmp expect out
 '
 
-test_expect_success NOT_MINGW 'shortlog from non-git directory' '
+test_expect_success !MINGW 'shortlog from non-git directory' '
        git log HEAD >log &&
        GIT_DIR=non-existing git shortlog -w <log >out &&
        test_cmp expect out
@@ -159,7 +159,7 @@ $DSCHO (2):
 
 EOF
 
-test_expect_success NOT_MINGW 'shortlog encoding' '
+test_expect_success !MINGW 'shortlog encoding' '
        git reset --hard "$commit" &&
        git config --unset i18n.commitencoding &&
        echo 2 > a1 &&