Fix missing m4 quoting that autoconf-2.68 warns about.
(Dave Goodell, goodell@mcs.anl.gov)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12238 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 19f4af3..9415568 100644
--- a/configure.in
+++ b/configure.in
@@ -1348,9 +1348,9 @@
 AC_MSG_RESULT([-Wextra])
 ], [
   CFLAGS="-W"
-  AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[ ]], [[
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
     return 0;
-  ]]), [
+  ]])], [
   AC_SUBST([FLAG_W_EXTRA], [-W])
   AC_MSG_RESULT([-W])
   ], [