configure.ac: quote the xyes for the libunwind check

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/configure.ac b/configure.ac
index 53a572e..8b838fd 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -255,7 +255,7 @@ AM_CONDITIONAL(HAVE_VALGRIND, [test "x$VALGRIND" != "x"])
 AM_CONDITIONAL(BUILD_TESTS, [test "x$build_tests" = "xyes"])
 AM_CONDITIONAL(RUN_TESTS, [test "x$run_tests" = "xyes"])
 AM_CONDITIONAL(BUILD_DOCS, [test "x$build_documentation" = "xyes"])
-AM_CONDITIONAL(HAVE_LIBUNWIND, [test "x$HAVE_LIBUNWIND" = xyes])
+AM_CONDITIONAL(HAVE_LIBUNWIND, [test "x$HAVE_LIBUNWIND" = "xyes"])
 AM_CONDITIONAL(BUILD_EVENTGUI, [test "x$build_eventgui" = "xyes"])
 
 AC_CONFIG_FILES([Makefile