[gnote] Fix boost.m4 to work with Autoconf >= 2.64

[Debarshi Ray <debarshir src gnome org>]

commit 3c1b20d523cd959a42a46f3530aeb720c0df7070
Author: Aurimas Ä?ernius <aurisc4 gmail com>
Date:   Fri Mar 12 01:34:15 2010 +0200

    Fix boost.m4 to work with Autoconf >= 2.64
    
    Fixes: https://bugzilla.gnome.org/603925

 m4/boost.m4 |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/m4/boost.m4 b/m4/boost.m4
index c4ba5ec..d48e659 100644
--- a/m4/boost.m4
+++ b/m4/boost.m4
@@ -59,7 +59,7 @@ dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
 (eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
   $SED -n -e "$1" >conftest.i 2>&1],
   [$3],
-  [$4])dnl
+  [$4])
 rm -f conftest*
 ])# AC_EGREP_CPP