Update Lib/pdb.py

Co-authored-by: AN Long <aisk@users.noreply.github.com>

Author: cocolato

Lib/pdb.py

@@ -1393,8 +1393,7 @@ def do_break(self, arg, temporary=False):
                 if not find_res:
                     self.error('Bad lineno or function name: %s' % arg)
                     return
-                funcname, filename, ln = find_res
-                lineno = int(ln)
+                funcname, filename, lineno = find_res
         else:
             # no colon; can be lineno or function
             try: