[gtksourceview] regex: fix comparison for assertions

[Christian Hergert <chergert src gnome org>]

commit 533a264357e8cd69a772c56e9644df029c14f17e
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jul 6 13:51:18 2021 -0700

    regex: fix comparison for assertions
    
    Fallout from #199

 gtksourceview/implregex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtksourceview/implregex.c b/gtksourceview/implregex.c
index e8dcbe01..7cb9a18a 100644
--- a/gtksourceview/implregex.c
+++ b/gtksourceview/implregex.c
@@ -1105,7 +1105,7 @@ impl_match_info_next (ImplMatchInfo  *match_info,
                match_info->pos = match_info->offsets[1];
        }
 
-       g_assert (match_info->matches <= match_info->n_subpatterns + 1);
+       g_assert (match_info->matches <= (int)match_info->n_subpatterns + 1);
 
        /* it's possible to get two identical matches when we are matching
         * empty strings, for instance if the pattern is "(?=[A-Z0-9])" and