opt: Don't segfault if a string's default is NULL

[ccan] / Makefile-ccan

diff --git a/Makefile-ccan b/Makefile-ccan
index c9115368f6faadcddf6a6f70fe50bd8217e988de..6410301d1e5d763835c50bc22156f83da6adb42d 100644 (file)
--- a/Makefile-ccan
+++ b/Makefile-ccan
@@ -68,6 +68,7 @@ MODS_WITH_SRC := antithread \
        likely \
        list \
        md4 \
+       memmem \
        net \
        nfs \
        noerr \