[gtksourceview] testsuite: check for NULL before usage

[Christian Hergert <chergert src gnome org>]

commit d03d0dee7b26bea3d7d55b01f627f112ab97cacd
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jul 22 15:31:22 2022 -0700

    testsuite: check for NULL before usage

 testsuite/test-snippets.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/testsuite/test-snippets.c b/testsuite/test-snippets.c
index f30d3ca7..d84cb7bb 100644
--- a/testsuite/test-snippets.c
+++ b/testsuite/test-snippets.c
@@ -97,21 +97,21 @@ test_snippet_parse (void)
        g_assert_cmpint (4, ==, gtk_source_snippet_get_n_chunks (snippet));
 
        chunk = gtk_source_snippet_get_nth_chunk (snippet, 0);
+       g_assert_nonnull (chunk);
        g_assert_cmpint (1, ==, gtk_source_snippet_chunk_get_focus_position (chunk));
        g_assert_cmpstr ("test", ==, gtk_source_snippet_chunk_get_spec (chunk));
-       g_assert_nonnull (chunk);
 
        chunk = gtk_source_snippet_get_nth_chunk (snippet, 1);
+       g_assert_nonnull (chunk);
        g_assert_cmpint (-1, ==, gtk_source_snippet_chunk_get_focus_position (chunk));
        g_assert_cmpstr (" ", ==, gtk_source_snippet_chunk_get_spec (chunk));
-       g_assert_nonnull (chunk);
 
        chunk = gtk_source_snippet_get_nth_chunk (snippet, 2);
+       g_assert_nonnull (chunk);
        g_assert_cmpint (2, ==, gtk_source_snippet_chunk_get_focus_position (chunk));
        g_assert_cmpstr ("$1", ==, gtk_source_snippet_chunk_get_spec (chunk));
        /* Unset until user types */
        g_assert_cmpstr ("", ==, gtk_source_snippet_chunk_get_text (chunk));
-       g_assert_nonnull (chunk);
 
        chunk = gtk_source_snippet_get_nth_chunk (snippet, 3);
        g_assert_cmpint (0, ==, gtk_source_snippet_chunk_get_focus_position (chunk));