no need for "zeroizable" indirection in secp256k1-sys

Author: kwantam

Cargo.toml

@@ -35,7 +35,7 @@ global-context = ["std"]
 # if you are doing a no-std build, then this feature does nothing
 # and is not necessary.)
 global-context-less-secure = ["global-context"]
-zeroizable = ["zeroize", "secp256k1-sys/zeroizable"]
+zeroizable = ["zeroize", "secp256k1-sys/zeroize"]
 
 [dependencies]
 secp256k1-sys = { version = "0.8.0", default-features = false, path = "./secp256k1-sys" }

secp256k1-sys/Cargo.toml

@@ -35,4 +35,3 @@ recovery = []
 lowmemory = []
 std = ["alloc"]
 alloc = []
-zeroizable = ["zeroize"]

secp256k1-sys/src/lib.rs

@@ -403,7 +403,7 @@ impl core::hash::Hash for XOnlyPublicKey {
 }
 
 #[repr(C)]
-#[cfg_attr(feature = "zeroizable", derive(zeroize::Zeroize))]
+#[cfg_attr(feature = "zeroize", derive(zeroize::Zeroize))]
 #[derive(Copy, Clone)]
 pub struct KeyPair([c_uchar; 96]);
 impl_array_newtype!(KeyPair, c_uchar, 96);