build-sys: use __SANITIZE_ADDRESS__ rather than custom USE_CLOSE_ATEXIT

Signed-off-by: Karel Zak <kzak@redhat.com>

configure.ac

@@ -156,10 +156,7 @@ AC_ARG_ENABLE([asan],
 AS_IF([test "x$enable_asan" = xyes], [
   UL_WARN_ADD([-fsanitize=address])
   ASAN_LDFLAGS="-fsanitize=address"
-],[
-  AC_DEFINE([USE_CLOSE_ATEXIT], [1], [close stdout at exit])
 ])
-
 AC_SUBST([ASAN_LDFLAGS])
 
 dnl libtool-2

include/closestream.h

@@ -57,7 +57,7 @@ close_stdout_atexit(void)
 	/*
 	 * Note that close stdout at exit disables ASAN to report memory leaks
 	 */
-#ifdef USE_CLOSE_ATEXIT
+#if !defined(__SANITIZE_ADDRESS__)
 	atexit(close_stdout);
 #endif
 }