fix clippy and build errors

Author: cmoylan

uefi/src/data_types/strs.rs

@@ -36,7 +36,7 @@ impl Display for FromSliceWithNulError {
 }
 
 #[cfg(feature = "unstable")]
-impl core::error::Error for StrConversionError {}
+impl core::error::Error for FromSliceWithNulError {}
 
 /// Error returned by [`CStr16::from_unaligned_slice`].
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]

uefi/src/proto/driver/component_name.rs

@@ -241,7 +241,7 @@ pub enum LanguageError {
 impl Display for LanguageError {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         match self {
-            Self::Ascii { index } => write!(f, "invalid character at index: {index}"),
+            Self::Ascii { index } => write!(f, "invalid character at index: {}", index),
         }
     }
 }