fix crash for non-existent workspace directories

diff --git a/lib/python/Components/Task.py b/lib/python/Components/Task.py
index 07b9d3f5db8383fb32504b7450d2678c46f663e2..167de21cff5d2b83047248d85ccf97a7b1db74cd 100644 (file)
--- a/lib/python/Components/Task.py
+++ b/lib/python/Components/Task.py
@@ -303,13 +303,13 @@ class WorkspaceExistsPrecondition(Condition):
 class DiskspacePrecondition(Condition):
        def __init__(self, diskspace_required):
                self.diskspace_required = diskspace_required
-               self.diskspace_available = None
+               self.diskspace_available = 0
 
        def check(self, task):
                import os
                try:
                        s = os.statvfs(task.job.workspace)
-                       self.diskspace_available = s.f_bsize * s.f_bavail 
+                       self.diskspace_available = s.f_bsize * s.f_bavail
                        return self.diskspace_available >= self.diskspace_required
                except OSError:
                        return False