imp: implement From<Infallible> for ClientError

.changelog/unreleased/improvements/1356-impl-From-Infallible-for-ClientError.md

@@ -0,0 +1,2 @@
+- [ibc-core] Implement `From<Infallible>` for `ClientError`
+  ([#1356](https://github.com/cosmos/ibc-rs/issues/1356)).

ibc-core/ics02-client/types/src/error.rs

@@ -1,5 +1,7 @@
 //! Defines the client error type
 
+use core::convert::Infallible;
+
 use displaydoc::Display;
 use ibc_core_commitment_types::error::CommitmentError;
 use ibc_core_host_types::error::{DecodingError, HostError, IdentifierError};
@@ -88,6 +90,12 @@ impl From<TimestampError> for ClientError {
     }
 }
 
+impl From<Infallible> for ClientError {
+    fn from(value: Infallible) -> Self {
+        match value {}
+    }
+}
+
 #[cfg(feature = "std")]
 impl std::error::Error for ClientError {
     fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {

ibc-core/ics24-host/types/src/error.rs

@@ -125,6 +125,12 @@
     }
 }
 
+impl From<ProstError> for DecodingError {
+    fn from(e: ProstError) -> Self {
+        Self::Prost(e)
+    }
+}
+
 impl From<Base64Error> for DecodingError {
     fn from(e: Base64Error) -> Self {
         Self::Base64(e)