Fix compile warning with rb.c sync

diff --git a/configure b/configure
index bc23fca521f4142d88b2614507eaed0813548205..d225cadf6fce805e56485ff0c6c23b80c26188e0 100755 (executable)
--- a/configure
+++ b/configure
@@ -1184,6 +1184,7 @@ EOF
        rm -f _rbtree.c _rbtree
 fi
 if [ "$RBTREE" = no ]; then
+       echo "#define   HAVE_NBTOOL_CONFIG_H    0" >>$CONFIG_H
        echo "#define   RBTEST" >>$CONFIG_H
        echo "COMPAT_SRCS+=     compat/rb.c" >>$CONFIG_MK
        echo "#include                  \"compat/rbtree.h\"" >>$CONFIG_H