Write configure message to AS_MESSAGE_FD
diff --git a/configure b/configure
index 20cf0e9..08ba430 100755
--- a/configure
+++ b/configure
@@ -17872,7 +17872,7 @@
 if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then
     echo "" >&6
     echo "" >&6
-    echo "If you want a release build with all optimizations active (LTO, PGO, etc),"
+    echo "If you want a release build with all optimizations active (LTO, PGO, etc)," >&6
     echo "please run ./configure --with-optimizations" >&6
     echo "" >&6
     echo "" >&6