BaseVM: fix .vdi_uuids() when VM has no disks

b84ee9f fixed the case where a VM had
more than 1 disk, but broke the case where it has *less* than 1.

Signed-off-by: Yann Dirson <[email protected]>

Author: ydirson

lib/basevm.py

@@ -40,6 +40,9 @@ def name(self):
 
     def vdi_uuids(self, sr_uuid=None):
         output = self._disk_list()
+        if output == '':
+            return []
+
         all_uuids = output.split(',')  # Split based on commas
         # Select only every alternate UUID (even index positions)
         vdis = all_uuids[0::2]  # Start at 0, step by 2