Cleanup code: remove int/long idioms and simplify a while statement.
diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index 3061675..515d375 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -510,10 +510,7 @@
     elif s == b"01":
         return True
 
-    try:
-        return int(s)
-    except OverflowError:
-        return int(s)
+    return int(s)
 
 def read_decimalnl_long(f):
     r"""