* threads.m4: Fixed a typo

diff --git a/m4/threads.m4 b/m4/threads.m4
index 8c8614d9ea5dfec61bc69e8fd51753163d88f81b..9b2e404a01323f7365115dfc2e653e31a9f56ac8 100644 (file)
--- a/m4/threads.m4
+++ b/m4/threads.m4
@@ -31,7 +31,7 @@ AC_DEFUN([AC_CHECK_ENABLE_THREADS],[
 AC_MSG_CHECKING(whether to include threads support)
 AC_ARG_ENABLE([threads],
               [AS_HELP_STRING(--enable-threads,enable threads support (none,native) [[default=native]])],
-              [case "$enableval}" in
+              [case "${enableval}" in
                    no | none | single )
                        ENABLE_THREADS=no
                        ;;