t0010-racy-git.sh: use the $( ... ) construct for command substitution

diff --git a/t/t0010-racy-git.sh b/t/t0010-racy-git.sh
index e45a9e40e432524454e94a041599b201a092879a..5657c5a87b6e253b8c8ca7d18dfa7535c295dc83 100755 (executable)
--- a/t/t0010-racy-git.sh
+++ b/t/t0010-racy-git.sh
@@ -14,7 +14,7 @@ do
        git update-index --add infocom
        echo xyzzy >infocom
 
-       files=`git diff-files -p`
+       files=$(git diff-files -p)
        test_expect_success \
        "Racy GIT trial #$trial part A" \
        'test "" != "$files"'
@@ -23,7 +23,7 @@ do
        echo xyzzy >cornerstone
        git update-index --add cornerstone
 
-       files=`git diff-files -p`
+       files=$(git diff-files -p)
        test_expect_success \
        "Racy GIT trial #$trial part B" \
        'test "" != "$files"'