Fix an occasional IndexError.

(I should try to figure out if the trunk py lib still has the
same issue, and write a test for it if it does, but I don't
really follow the trunk py lib, so I'm just checking this
here and it can be ignored if we update the py lib.)

1 files changed, 1 insertions, 0 deletions

diff --git a/py/_code/code.py b/py/_code/code.py
index e83db25828..48c31f535b 100644
--- a/py/_code/code.py
+++ b/py/_code/code.py
@@ -164,6 +164,7 @@ class TracebackEntry(object):
         #   if something:  # assume this causes a NameError
         #      # _this_ lines and the one
                #        below we don't want from entry.getsource()
+        end = min(end, len(source))
         for i in range(self.lineno, end):
             if source[i].rstrip().endswith(':'):
                 end = i + 1