[gtk-doc] mkdb: restore the --output-dir parameter

[Stefan Sauer <stefkost src gnome org>]

commit aea080a92050edd2894f9a228d138cb80edfc4be
Author: Stefan Sauer <ensonic users sf net>
Date:   Thu Sep 5 20:30:28 2019 +0200

    mkdb: restore the --output-dir parameter
    
    This was not used since we converted to python.

 gtkdoc/mkdb.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtkdoc/mkdb.py b/gtkdoc/mkdb.py
index bcb5423..9d910cb 100644
--- a/gtkdoc/mkdb.py
+++ b/gtkdoc/mkdb.py
@@ -267,6 +267,7 @@ def Run(options):
     MODULE = options.module
     INLINE_MARKUP_MODE = options.xml_mode or options.sgml_mode
     NAME_SPACE = options.name_space
+    DB_OUTPUT_DIR = options.output_dir or os.path.join(ROOT_DIR, "xml")
 
     main_sgml_file = options.main_sgml_file
     if not main_sgml_file:
@@ -297,7 +298,6 @@ def Run(options):
     # -- phase 2: scan sources
 
     # TODO: move this to phase 3 once we fixed the call to OutputProgramDBFile()
-    DB_OUTPUT_DIR = DB_OUTPUT_DIR if DB_OUTPUT_DIR else os.path.join(ROOT_DIR, "xml")
     if not os.path.isdir(DB_OUTPUT_DIR):
         os.mkdir(DB_OUTPUT_DIR)