configure.ac: no use to add "+" before ac_ext=c

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 899dd23766c5ae6fef39bf24ef0692127d17deb3)
Signed-off-by: Robin H. Johnson <robin.johnson@dreamhost.com>

diff --git a/configure.ac b/configure.ac
index 969baed8357dbca3dd25ba7577fe193eb653ec52..28d06f807a0357c911c08e8f31696e2f7bccee76 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -988,7 +988,7 @@ AC_MSG_RESULT([no])
 ])
 
 AC_MSG_CHECKING([for sched.h])
-+AC_LANG_PUSH([C++])
+AC_LANG_PUSH([C++])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #define _GNU_SOURCE
 #include <sched.h>
@@ -1005,7 +1005,7 @@ AC_DEFINE([HAVE_SCHED], 1, [Define to 1 if you have sched.h.])
 ], [
 AC_MSG_RESULT([no])
 ])
-+AC_LANG_POP([C++])
+AC_LANG_POP([C++])
 
 
 #