test: Tidy up checking for console end

Use the ut_assert_console_end() function provided, rather than doing it
separately.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/log/cont_test.c b/test/log/cont_test.c
index 395a658..32b1c79 100644
--- a/test/log/cont_test.c
+++ b/test/log/cont_test.c
@@ -32,7 +32,7 @@
 	gd->flags &= ~GD_FLG_RECORD;
 	ut_assertok(ut_check_console_line(uts, "ERR.arch, ea1"));
 	ut_assertok(ut_check_console_line(uts, "ERR.arch, cc2"));
-	ut_assertok(ut_check_console_end(uts));
+	ut_assert_console_end();
 
 	/* Write a third message which is not a continuation */
 	gd->log_fmt = (1 << LOGF_CAT) | (1 << LOGF_LEVEL) | (1 << LOGF_MSG);
@@ -43,7 +43,7 @@
 	gd->log_fmt = log_fmt;
 	gd->flags &= ~GD_FLG_RECORD;
 	ut_assertok(ut_check_console_line(uts, "INFO.efi, ie3"));
-	ut_assertok(ut_check_console_end(uts));
+	ut_assert_console_end();
 
 	/* Write two messages without a newline between them */
 	gd->log_fmt = (1 << LOGF_CAT) | (1 << LOGF_LEVEL) | (1 << LOGF_MSG);
@@ -55,7 +55,7 @@
 	gd->log_fmt = log_fmt;
 	gd->flags &= ~GD_FLG_RECORD;
 	ut_assertok(ut_check_console_line(uts, "ERR.arch, ea1 cc2"));
-	ut_assertok(ut_check_console_end(uts));
+	ut_assert_console_end();
 
 	return 0;
 }