Fix aclocal underquoted definition warning.

git-svn-id: http://svn.xiph.org/trunk/ao@12982 0101bb08-14d6-0310-b084-bc0e0c8e3800

acinclude.m4

@@ -7,7 +7,8 @@
 dnl AM_PATH_ESD([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
 dnl Test for ESD, and define ESD_CFLAGS and ESD_LIBS
 dnl
-AC_DEFUN(AM_PATH_ESD,
+
+AC_DEFUN([AM_PATH_ESD],
 [dnl 
 dnl Get the cflags and libraries from the esd-config script
 dnl