Patch for CVE-2008-2371:

Fix propsed by the reporter of the issue - Tavis Ormandy.
Reviewed by upstream, but not yet in upstream SVN as of 2008-07-04.

--- pcre-7.3/pcre_compile.c.orig	2008-07-04 16:19:28.000000000 +0200
+++ pcre-7.3/pcre_compile.c	2008-07-04 16:20:19.000000000 +0200
@@ -4709,7 +4709,7 @@ for (;; ptr++)
                (lengthptr == NULL || *lengthptr == 2 + 2*LINK_SIZE))
             {
             cd->external_options = newoptions;
-            options = newoptions;
+            *optionsptr = options = newoptions;
             }
          else
             {