t4038-diff-combined: quote paths with whitespace

d76ce4f ("log,diff-tree: add --combined-all-paths option",
2019-02-07) added tests for files containing tabs.

When the tests are run with bash, the lack of quoting during the file
setup causes 'ambiguous redirect' errors.

Signed-off-by: Todd Zullinger <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: tmzullinger

t/t4038-diff-combined.sh

@@ -480,18 +480,18 @@ test_expect_success FUNNYNAMES 'setup for --combined-all-paths with funny names'
 	git branch side1d &&
 	git branch side2d &&
 	git checkout side1d &&
-	test_seq 1 10 >$(printf "file\twith\ttabs") &&
+	test_seq 1 10 >"$(printf "file\twith\ttabs")" &&
 	git add file* &&
 	git commit -m with &&
 	git checkout side2d &&
-	test_seq 1 9 >$(printf "i\tam\ttabbed") &&
-	echo ten >>$(printf "i\tam\ttabbed") &&
+	test_seq 1 9 >"$(printf "i\tam\ttabbed")" &&
+	echo ten >>"$(printf "i\tam\ttabbed")" &&
 	git add *tabbed &&
 	git commit -m iam &&
 	git checkout -b funny-names-mergery side1d &&
 	git merge --no-commit side2d &&
 	git rm *tabs &&
-	echo eleven >>$(printf "i\tam\ttabbed") &&
+	echo eleven >>"$(printf "i\tam\ttabbed")" &&
 	git mv "$(printf "i\tam\ttabbed")" "$(printf "fickle\tnaming")" &&
 	git add fickle* &&
 	git commit