Try Py2.5 compatibility as last fallback for thread identity.

paramiko/win_pageant.py

@@ -40,5 +40,9 @@
 
 
 def get_thread_ident():
-    try:  # thread.get_ident() exists from Py2.5 to Py2.7.
+    # thread.get_ident() exists from Py2.5 to Py2.7.
+    # threading.current_thread().ident exists from Py2.6 up to Py3.4.
+    try:
+        return threading.current_thread().ident
+    except AttributeError:
         return thread.get_ident()
@@ -44,6 +48,4 @@
         return thread.get_ident()
-    except AttributeError:  # threading.current_thread().ident exists from Py2.6 up to Py3.4.
-        return threading.current_thread().ident
 
 
 def _get_pageant_window_object():