Do not attempt to parse empty file

trans/admin_views.py

@@ -250,6 +250,7 @@ def ssh(request):
     # Read key data if it exists
     if os.path.exists(RSA_KEY_FILE):
         key_data = file(RSA_KEY_FILE).read()
+        if len(key_data) > 0:
             key_type, key_fingerprint, key_id = key_data.strip().split(None, 2)
             key = {
                 'key': key_data,
@@ -259,6 +260,8 @@ def ssh(request):
             }
         else:
             key = None
+    else:
+        key = None
 
     # Add host key
     if action == 'add-host':