Crash when parsing X-Spam-Score headers with no score

[email2trac@…]

Given a non-spam email, i.e. the X-Spam-Score header is present, but has no value, the script will crash with:

Traceback (most recent call last):
  File "/usr/bin/email2trac", line 1137, in ?     tktparser.parse(sys.stdin)
  File "/usr/bin/email2trac", line 710, in parse     component =  self.spam(m)
  File "/usr/bin/email2trac", line 245, in spam     number = spam_l[0].count('*')
IndexError: list index out of range

Patch as follows:

--- email2trac.orig     2008-05-29 15:02:15.000000000 -0700
+++ email2trac  2008-05-29 15:04:09.000000000 -0700
@@ -242,7 +242,10 @@
                spam = False
                if message.has_key('X-Spam-Score'):
                        spam_l = string.split(message['X-Spam-Score'])
-                       number = spam_l[0].count('*')
+                       if len(spam_l) == 0:
+                               number = 0
+                       else:
+                               number = spam_l[0].count('*')
 
                        if number >= self.SPAM_LEVEL:
                                spam = True

[bas]

thanks for the patch, it is aplied to trunk