Bug#420598: [Mutt] #2882: segfaults in uxterm with > 254 columns if there are single byte 8-bit characters in index_format

[Mutt]

#2882: segfaults in uxterm with > 254 columns if there are single byte
        8-bit characters in index_format

Changes (by pdmef):

  * status:  new => closed
  * resolution:  => fixed

Comment:

 (In [bb4f47b4578d]) Fix buffer overflow in mutt_FormatString()

 The variable in question is supposed to track string sizes, not string
 widths (closes #2882 and #2900).

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Ticket URL: <http://dev.mutt.org/trac/ticket/2882#comment:1>