password-hash: change bounds for PHC verify blanket impl [BREAKING]

Changes the `TryFrom` bound for constructing `T::Params` to accept a
full `phc::PasswordHash` as the input type, rather than just its
`phc::ParamsString`.

This is actually how it used to work in prior releases, but regressed:

https://docs.rs/password-hash/0.5.0/src/password_hash/traits.rs.html#63

This is needed so the params can include the output size for the hash.

This is unfortunately a breaking change, but fortunately we haven't yet
released any password hash crates, so it will only impact prerelease
users.

Author: tarcieri

password-hash/src/lib.rs

@@ -196,7 +196,7 @@ pub trait PasswordVerifier<H: ?Sized> {
 #[cfg(feature = "phc")]
 impl<T: CustomizedPasswordHasher<phc::PasswordHash>> PasswordVerifier<phc::PasswordHash> for T
 where
-    T::Params: for<'a> TryFrom<&'a phc::ParamsString, Error = Error>,
+    T::Params: for<'a> TryFrom<&'a phc::PasswordHash, Error = Error>,
 {
     fn verify_password(&self, password: &[u8], hash: &phc::PasswordHash) -> Result<()> {
         #[allow(clippy::single_match)]
@@ -207,7 +207,7 @@ where
                     salt,
                     Some(hash.algorithm.as_str()),
                     hash.version,
-                    T::Params::try_from(&hash.params)?,
+                    T::Params::try_from(hash)?,
                 )?;
 
                 if let Some(computed_output) = &computed_hash.hash {