[damned-lies] Provide for the case where includes is None

[Claude Paroz <claudep src gnome org>]

commit d7b02d23e79cc85b3ef657ef8a88f175aa593db1
Author: Claude Paroz <claude 2xlibre net>
Date:   Sat Jul 4 11:06:56 2009 +0200

    Provide for the case where includes is None

 stats/utils.py |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/stats/utils.py b/stats/utils.py
index 377208b..494dcd3 100644
--- a/stats/utils.py
+++ b/stats/utils.py
@@ -120,9 +120,10 @@ def generate_doc_pot_file(vcs_path, potbase, moduleid, verbose):
 
     files = os.path.join("C", modulename + ".xml")
     includes = read_makefile_variable([vcs_path], "DOC_INCLUDES")
-    for f in includes.split(" "):
-        if f.strip() != "":
-            files += " %s" % (os.path.join("C", f.strip()))
+    if includes:
+        for f in includes.split(" "):
+            if f.strip() != "":
+                files += " %s" % (os.path.join("C", f.strip()))
 
     potfile = os.path.join(vcs_path, "C", potbase + ".pot")
     command = "cd \"%s\" && xml2po -o %s -e %s" % (vcs_path, potfile, files)