[gtk-doc] mkdb: add a todo for section with no symbols.

[Stefan Sauer <stefkost src gnome org>]

commit 7d820981625691bbd3c5d22722f76a1490d83cad
Author: Stefan Sauer <ensonic users sf net>
Date:   Wed Nov 8 21:00:16 2017 +0100

    mkdb: add a todo for section with no symbols.

 gtkdoc/mkdb.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtkdoc/mkdb.py b/gtkdoc/mkdb.py
index fcc3614..96fa931 100644
--- a/gtkdoc/mkdb.py
+++ b/gtkdoc/mkdb.py
@@ -474,6 +474,8 @@ def OutputDB(file, options):
 
         elif re.search(r'^<\/SECTION>', line):
             logging.info("End of section: %s", title)
+            # TODO: also output if we have sections docs?
+            # long_desc = SymbolDocs.get(filename + ":Long_Description")
             if num_symbols > 0:
                 # collect documents
                 book_bottom += "    <xi:include href=\"xml/%s.xml\"/>\n" % filename