Make ./configure string consistent

This was forgotten in some PR rebase.

diff --git a/configure.ac b/configure.ac
index b8340b7de13c71a6cc8b44f83bd981eae6cda526..cb73e9cdbcc8a88037ee639febf8cc0905a058ad 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -135,7 +135,7 @@ AC_ARG_ENABLE(module_recovery,
     [enable_module_recovery=no])
 
 AC_ARG_ENABLE(external_default_callbacks,
-    AS_HELP_STRING([--enable-external-default-callbacks],[enable external default callback functions (default is no)]),
+    AS_HELP_STRING([--enable-external-default-callbacks],[enable external default callback functions [default=no]]),
     [use_external_default_callbacks=$enableval],
     [use_external_default_callbacks=no])