Fix up python breakage for blkdev_name_to_number

Signed-off-by: Chris Lalancette <clalance@redhat.com>

tools/python/xen/util/blkif.py

@@ -63,7 +63,7 @@ def blkdev_segment(name):
         type:         'Disk' or identifying name for partition type
     """
     val = None
-    n = blkdev_name_to_number(name)
+    (name, n) = blkdev_name_to_number(name)
     if not n is None:
         val = { 'device'       : n,
                 'start_sector' : long(0),

tools/python/xen/xend/XendConfig.py

@@ -1123,7 +1123,7 @@ class XendConfig(dict):
             try:
                 devid = int(dev2)
             except ValueError:
-                devid = blkdev_name_to_number(dev2)
+                (xenbus, devid) = blkdev_name_to_number(dev2)
                 if devid == None:
                     log.debug("The device %s is not device name", dev2)
                     return None