t1410-reflog.sh: avoid suppressing git's exit code in pipelines

Piping git commands directly to wc -l suppresses the exit code of
git, hiding potential failures from the test suite. Use
test_stdout_line_count instead, which handles exit code preservation
internally while keeping the test logic clean and readable.

Signed-off-by: Gatla Vishweshwar Reddy <gatlavishweshwarreddy26@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: Gatla Vishweshwar Reddy

t/t1410-reflog.sh

@@ -244,30 +244,22 @@ test_expect_success 'delete' '
 	test_tick &&
 	git commit -m tiger C &&
 
-	HEAD_entry_count=$(git reflog | wc -l) &&
-	main_entry_count=$(git reflog show main | wc -l) &&
-
-	test $HEAD_entry_count = 5 &&
-	test $main_entry_count = 5 &&
-
+	test_stdout_line_count = 5 git reflog &&
+	test_stdout_line_count = 5 git reflog show main &&
 
 	git reflog delete main@{1} &&
+	test_stdout_line_count = 4 git reflog show main &&
+	test_stdout_line_count = 5 git reflog &&
 	git reflog show main > output &&
-	test_line_count = $(($main_entry_count - 1)) output &&
-	test $HEAD_entry_count = $(git reflog | wc -l) &&
 	! grep ox < output &&
 
-	main_entry_count=$(wc -l < output) &&
-
 	git reflog delete HEAD@{1} &&
-	test $(($HEAD_entry_count -1)) = $(git reflog | wc -l) &&
-	test $main_entry_count = $(git reflog show main | wc -l) &&
-
-	HEAD_entry_count=$(git reflog | wc -l) &&
+	test_stdout_line_count = 4 git reflog &&
+	test_stdout_line_count = 4 git reflog show main &&
 
 	git reflog delete main@{07.04.2005.15:15:00.-0700} &&
+	test_stdout_line_count = 3 git reflog show main &&
 	git reflog show main > output &&
-	test_line_count = $(($main_entry_count - 1)) output &&
 	! grep dragon < output
 
 '
@@ -321,11 +313,11 @@ test_expect_success 'git reflog expire unknown reference' '
 '
 
 test_expect_success 'checkout should not delete log for packed ref' '
-	test $(git reflog main | wc -l) = 4 &&
+	test_stdout_line_count = 4 git reflog main &&
 	git branch foo &&
 	git pack-refs --all &&
 	git checkout foo &&
-	test $(git reflog main | wc -l) = 4
+	test_stdout_line_count = 4 git reflog main
 '
 
 test_expect_success 'stale dirs do not cause d/f conflicts (reflogs on)' '