[IMP] base_module_import: ignore garbage directories

If the zipfile contains some garbage directories (e.g. leftover empty
directories from git, `__MACOSX` metadata folder, …) it seems
unnecessary to log an error, just skip the directory and don't mark it
as a proper / successful module.

closes odoo/odoo#31639

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

addons/base_import_module/models/ir_module.py

@@ -28,6 +28,8 @@ class IrModule(models.Model):
         installed_mods = [m.name for m in known_mods if m.state == 'installed']
 
         terp = load_information_from_description_file(module, mod_path=path)
+        if not terp:
+            return False
         values = self.get_values_from_terp(terp)
 
         unmet_dependencies = set(terp['depends']).difference(installed_mods)
@@ -110,8 +112,8 @@ class IrModule(models.Model):
                         try:
                             # assert mod_name.startswith('theme_')
                             path = opj(module_dir, mod_name)
-                            self.import_module(mod_name, path, force=force)
-                            success.append(mod_name)
+                            if self.import_module(mod_name, path, force=force):
+                                success.append(mod_name)
                         except Exception, e:
                             _logger.exception('Error while importing module')
                             errors[mod_name] = exception_to_unicode(e)