pack-objects test: modernize style

Modernize the quoting and indentation style of two tests added in
8685da4256 ("don't ever allow SHA1 collisions to exist by fetching a
pack", 2007-03-20), and of a subsequent one added in
4614043c8f ("index-pack: use streaming interface for collision test on
large blobs", 2012-05-24) which had copied the style of the first two.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5300-pack-object.sh

@@ -475,22 +475,22 @@ test_expect_success 'pack-objects in too-many-packs mode' '
 # two tests at the end of this file.
 #
 
-test_expect_success \
-    'fake a SHA1 hash collision' \
-    'long_a=$(git hash-object a | sed -e "s!^..!&/!") &&
-     long_b=$(git hash-object b | sed -e "s!^..!&/!") &&
-     test -f	.git/objects/$long_b &&
-     cp -f	.git/objects/$long_a \
-		.git/objects/$long_b'
+test_expect_success 'fake a SHA1 hash collision' '
+	long_a=$(git hash-object a | sed -e "s!^..!&/!") &&
+	long_b=$(git hash-object b | sed -e "s!^..!&/!") &&
+	test -f	.git/objects/$long_b &&
+	cp -f	.git/objects/$long_a \
+		.git/objects/$long_b
+'
 
-test_expect_success \
-    'make sure index-pack detects the SHA1 collision' \
-    'test_must_fail git index-pack -o bad.idx test-3.pack 2>msg &&
-     test_i18ngrep "SHA1 COLLISION FOUND" msg'
+test_expect_success 'make sure index-pack detects the SHA1 collision' '
+	test_must_fail git index-pack -o bad.idx test-3.pack 2>msg &&
+	test_i18ngrep "SHA1 COLLISION FOUND" msg
+'
 
-test_expect_success \
-    'make sure index-pack detects the SHA1 collision (large blobs)' \
-    'test_must_fail git -c core.bigfilethreshold=1 index-pack -o bad.idx test-3.pack 2>msg &&
-     test_i18ngrep "SHA1 COLLISION FOUND" msg'
+test_expect_success 'make sure index-pack detects the SHA1 collision (large blobs)' '
+	test_must_fail git -c core.bigfilethreshold=1 index-pack -o bad.idx test-3.pack 2>msg &&
+	test_i18ngrep "SHA1 COLLISION FOUND" msg
+'
 
 test_done