[Mutt] #3054: mutt-1.5.17: inconsistent format strings in debug output of rfc3676.c

#3054: mutt-1.5.17: inconsistent format strings in debug output of rfc3676.c

 {{{
 Package: mutt
 Version: 1.5.17
 Severity: normal

 -- Please type your report below this line
 rfc3676.c causes gcc 4.1.2 complaints since %ld is used to print size_t
 type arguments. The patch included below casts these arguments to long
 to avoid issues on platforms where sizeof(long) != sizeof(size_t).

 This is generated with hg export:

 # HG changeset patch
 # User Matthias Andree <matthias.andree <at> gmx.de>
 # Date 1210495963 -7200
 # Branch HEAD
 # Node ID 09b0363cdf54c414fc7a94b8034ea67b242ab439
 # Parent  98c39c5187a957c12ee99a0d7322634723f1e866
 In debug output, cast size_t arguments to long for consistency with
 printf %ld argument.

 diff -r 98c39c5187a9 -r 09b0363cdf54 rfc3676.c
 --- a/rfc3676.c Sun May 11 00:50:31 2008 -0700
 +++ b/rfc3676.c Sun May 11 10:52:43 2008 +0200
 @@ -101,16 +101,16 @@

    width = quote_width (s, ql);