patch 9.0.1528: libsodium encryption is only used with "huge" features

Problem:    Libsodium encryption is only used with "huge" features, even when
            manually enabled through configure. (Tony Mechelynck)
Solution:   Remove the condition on FEAT_HUGE.
diff --git a/src/feature.h b/src/feature.h
index 24c8448..ba61fa2 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -373,9 +373,9 @@
 #endif
 
 /*
- * libsodium - add cryptography support
+ * libsodium - add advanced cryptography support
  */
-#if defined(HAVE_SODIUM) && defined(FEAT_HUGE)
+#if defined(HAVE_SODIUM) && defined(FEAT_CRYPT)
 # define FEAT_SODIUM
 #endif