Fix indentation in print_stack_entry method

Author: pareshjoshij

Lib/pdb.py

@@ -2429,7 +2429,7 @@ def print_stack_trace(self, count=None):
         except KeyboardInterrupt:
             pass
 
-    def print_stack_entry(self, frame_lineno, prompt_prefix=None):     
+    def print_stack_entry(self, frame_lineno, prompt_prefix=None):
         if prompt_prefix is None:         
             prompt_prefix = line_prefix
         frame, lineno = frame_lineno