[library-web] actually allow makefile.am to be missing (required for htmlfiles.py)

[Frederic Peters <fpeters src gnome org>]

commit 015fefdebd2931f8d98da3c10cd54e372acc9875
Author: Frédéric Péters <fpeters 0d be>
Date:   Fri Jan 12 20:24:11 2018 +0100

    actually allow makefile.am to be missing (required for htmlfiles.py)

 src/modtypes/base.py |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/modtypes/base.py b/src/modtypes/base.py
index 5bc99d9..87cb486 100644
--- a/src/modtypes/base.py
+++ b/src/modtypes/base.py
@@ -77,7 +77,9 @@ class DocModule(object):
             assert match
             self.modulename = match[0]
         else:
-            raise Exception('need makefile.am or meson.build')
+            self.makefile_am = makefile_am
+            pass # raise Exception('need makefile.am or meson.build')
+
         self.version = os.path.splitext(tar.name)[0].split('-')[-1]
         if self.version.endswith('.tar'):
             self.version = self.version[:-4]