Bug 704 Minor code change for exception details

Change-Id: I66bb530b17a774de1bc328182e53eb4035f09121
Signed-off-by: madavi <jm00553988@techmahindra.com>
diff --git a/osmclient/sol005/nsd.py b/osmclient/sol005/nsd.py
index b134461..873be5b 100644
--- a/osmclient/sol005/nsd.py
+++ b/osmclient/sol005/nsd.py
@@ -116,7 +116,7 @@
             msg = ""
             if resp:
                 try:
-                    resp = json.loads(resp)
+                    msg = json.loads(resp)
                 except ValueError:
                     msg = resp
             raise ClientException("failed to delete nsd {} - {}".format(name, msg))