[master] 507ca25ed build: Squash autoconf warning on ac_cv_have_viz

[Dridi Boukelmoune]

commit 507ca25edcbbec008fef2866b7399322719cd6a6
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Oct 4 10:56:40 2023 +0200

    build: Squash autoconf warning on ac_cv_have_viz

diff --git a/configure.ac b/configure.ac
index 7faad20f2..80ba619ee 100644
--- a/configure.ac
+++ b/configure.ac
@@ -726,11 +726,14 @@ AC_CACHE_CHECK([whether we have support for visibility attributes],
 		[AC_LANG_PROGRAM([[
 			int __attribute__((visibility ("hidden"))) foo;
 		]],[])],
-	[AC_DEFINE([HAVE_HIDDEN], [1],
-		[Define to 1 if visibility attribute hidden is available.])
-	])
+		[ac_cv_have_viz=yes],
+		[ac_cv_have_viz=no])
 ])
 
+AS_IF([test $ac_cv_have_viz = yes], [
+	AC_DEFINE([HAVE_HIDDEN], [1],
+		[Define to 1 if visibility attribute hidden is available.])])
+
 # --enable-stack-protector
 AC_ARG_ENABLE(stack-protector,
        AS_HELP_STRING([--enable-stack-protector],[enable stack protector (default is YES)]),