missing crypto_blind_sign symbols

[Slack Coder]

Hi,

I'm getting 'undefined reference to `GNUNET_CRYPTO_blinded_*' errors 
when trying to compile a downstream project. Is 'crypto_blind_sign.c' 
mistakenly missing from the meson build system?

diff --git a/src/lib/util/meson.build b/src/lib/util/meson.build
index 9c3badafe..c9a73bdd3 100644
--- a/src/lib/util/meson.build
+++ b/src/lib/util/meson.build
@@ -18,6 +18,7 @@ libgnunetutil_src = ['bandwidth.c',
        'container_multiuuidmap.c',
        'container_multipeermap.c',
        'container_multihashmap32.c',
+       'crypto_blind_sign.c',
        'crypto_symmetric.c',
        'crypto_crc.c',
        'crypto_cs.c',