tolerate no slice name in sliverstatus screen

diff --git a/sface/sfidata.py b/sface/sfidata.py
index 9a2710a..0adda24 100644 (file)
--- a/sface/sfidata.py
+++ b/sface/sfidata.py
@@ -105,6 +105,9 @@ class SfiData:
         if not slice:
             slice = config.getSlice()
 
         if not slice:
             slice = config.getSlice()
 

+        if not slice:
+            return None
+

         filename = config.fullpath(slice+".sliverstatus")
 
         if os.path.exists(filename):
         filename = config.fullpath(slice+".sliverstatus")
 
         if os.path.exists(filename):