add note & fix typo

vlib/crypto/aes/block_generic.v

@@ -3,7 +3,7 @@
 // that can be found in the LICENSE file.
 
 // This implementation is derived from the golang implementation
-// which itself is deroved in part from the reference
+// which itself is derived in part from the reference
 // ANSI C implementation, which carries the following notice:
 //
 //	rijndael-alg-fst.c

vlib/crypto/internal/subtle/aliasing.v

@@ -7,6 +7,8 @@
 
 module subtle
 
+// NOTE: require unsafe in future
+
 // any_overlap reports whether x and y share memory at any (not necessarily
 // corresponding) index. The memory beyond the slice length is ignored.
 pub fn any_overlap(x, y []byte) bool {