fixup! Add ShellParams protocol

Author: JohnAZoidberg

uefi/src/proto/shell_params.rs

@@ -1,13 +1,18 @@
 //! `ShellParams` protocol
 
 use crate::proto::unsafe_protocol;
-use crate::{CStr16, Char16};
+use crate::Char16;
 use core::ffi::c_void;
 
+#[cfg(feature = "alloc")]
+use crate::CStr16;
 #[cfg(feature = "alloc")]
 use alloc::string::String;
+#[cfg(feature = "alloc")]
 use alloc::string::ToString;
+#[cfg(feature = "alloc")]
 use alloc::vec;
+#[cfg(feature = "alloc")]
 use alloc::vec::Vec;
 
 type ShellFileHandle = *const c_void;