Merge branch 'sg/t7501-thinkofix'

Test fixes.

* sg/t7501-thinkofix:
  t7501-commit: drop silly command substitution

Author: gitster

t/t7501-commit.sh

@@ -675,7 +675,7 @@ test_expect_success '--dry-run with conflicts fixed from a merge' '
 	git checkout -b branch-2 HEAD^1 &&
 	echo "commit-2-state" >test-file &&
 	git commit -m "commit 2" -i test-file &&
-	! $(git merge --no-commit commit-1) &&
+	test_must_fail git merge --no-commit commit-1 &&
 	echo "commit-2-state" >test-file &&
 	git add test-file &&
 	git commit --dry-run &&