[gtksourceview] testsuite: fix issue id

[Christian Hergert <chergert src gnome org>]

commit ab02b20a8e6f4a36d790db41b366d8d86f08239f
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 5 15:54:49 2021 -0700

    testsuite: fix issue id

 testsuite/test-regex.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/testsuite/test-regex.c b/testsuite/test-regex.c
index 6721e37b..55a3e8b0 100644
--- a/testsuite/test-regex.c
+++ b/testsuite/test-regex.c
@@ -212,7 +212,7 @@ test_compare (void)
 }
 
 static void
-test_issue_138 (void)
+test_issue_198 (void)
 {
   GError *error = NULL;
   ImplRegex *re = impl_regex_new ("(a)*", 0, 0, &error);
@@ -241,7 +241,7 @@ main (int argc, char** argv)
 
        g_test_add_func ("/Regex/slash-c", test_slash_c_pattern);
        g_test_add_func ("/Regex/compare-g-regex", test_compare);
-       g_test_add_func ("/Regex/issue_138", test_issue_138);
+       g_test_add_func ("/Regex/issue_198", test_issue_198);
 
        return g_test_run();
 }