Remove mutt-1.5.23-sendlib.patch from dist-git

mutt-1.5.23-sendlib.patch

@@ -1,43 +0,0 @@
-# HG changeset patch
-# User Kevin McCarthy <kevin@8t8.us>
-# Date 1417472364 28800
-#      Mon Dec 01 14:19:24 2014 -0800
-# Branch stable
-# Node ID 54c59aaf88b9f6b50f1078fc6f7551fa9315ac3e
-# Parent  1b583341d5ad677c8a1935eb4110eba27606878a
-Revert write_one_header() to skip space and tab.  (closes #3716)
-
-This patch fixes CVE-2014-9116 in the stable branch.  It reverts
-write_one_header() to the pre [f251d523ca5a] code for skipping
-whitespace.
-
-Thanks to Antonio Radici and Tomas Hoger for their analysis and patches
-to mutt, which this patch is based off of.
-
-diff --git a/sendlib.c b/sendlib.c
---- a/sendlib.c
-+++ b/sendlib.c
-@@ -1809,17 +1809,22 @@
-     {
-       tagbuf = NULL;
-       valbuf = mutt_substrdup (start, end);
-     }
-     else
-     {
-       tagbuf = mutt_substrdup (start, t);
-       /* skip over the colon separating the header field name and value */
--      t = skip_email_wsp(t + 1);
-+      ++t;
-+
-+      /* skip over any leading whitespace (WSP, as defined in RFC5322) */
-+      while (*t == ' ' || *t == '\t')
-+        t++;
-+
-       valbuf = mutt_substrdup (t, end);
-     }
-     dprint(4,(debugfile,"mwoh: buf[%s%s] too long, "
- 	      "max width = %d > %d\n",
- 	      NONULL(pfx), valbuf, max, wraplen));
-     if (fold_one_header (fp, tagbuf, valbuf, pfx, wraplen, flags) < 0)
-       return -1;
-     FREE (&tagbuf);