about: move layout into page functions

Signed-off-by: John Keeping <john@keeping.me.uk>
diff --git a/ui-summary.c b/ui-summary.c
index a5c7078..cd1fef5 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -101,8 +101,9 @@
 	char *filename, *ref;
 	int free_filename = 0;
 
+	cgit_print_layout_start();
 	if (ctx.repo->readme.nr == 0)
-		return;
+		goto done;
 
 	filename = ctx.repo->readme.items[0].string;
 	ref = ctx.repo->readme.items[0].util;
@@ -111,7 +112,7 @@
 		free_filename = 1;
 		filename = append_readme_path(filename, ref, path);
 		if (!filename)
-			return;
+			goto done;
 	}
 
 	/* Print the calculated readme, either from the git repo or from the
@@ -128,4 +129,7 @@
 	html("</div>");
 	if (free_filename)
 		free(filename);
+
+done:
+	cgit_print_layout_end();
 }