init: allow nonstandard_style for generated accessor/value

Allows `nonstandard_style` lint on accessors/values generated as local
variables in `init!`.

Since the same warning will be reported by the compiler on the struct
field, having the extra warning for the generated accessor/value is
unnecessary and confusing.

Reported-by: Gary Guo <gary@garyguo.net>
Link: #125
Closes: https://lore.kernel.org/rust-for-linux/DGTBJBIVFZ2K.2F1ZEFGY0G7NK@garyguo.net/
Fixes: f1b0c3c ("internal: init: remove #[disable_initialized_field_access]")
Signed-off-by: Mirko Adzic <adzicmirko97@gmail.com>

Author: Mirko-A

internal/src/init.rs

@@ -245,7 +245,12 @@ fn init_fields(
                     // Setting the span of `value_ident` to `value`'s span improves error messages
                     // when the type of `value` is wrong.
                     value_ident.set_span(value.span());
-                    quote!(let #value_ident = #value;)
+                    quote! {
+                        // Allow `nonstandard_style` since the same warning is going to be reported for
+                        // the struct field.
+                        #[allow(nonstandard_style)]
+                        let #value_ident = #value;
+                    }
                 });
                 // Again span for better diagnostics
                 let write = quote_spanned!(ident.span()=> ::core::ptr::write);
@@ -273,7 +278,9 @@ fn init_fields(
                         unsafe { #write(&raw mut (*#slot).#ident, #value_ident) };
                     }
                     #(#cfgs)*
-                    #[allow(unused_variables)]
+                    // Allow `nonstandard_style` since the same warning is going to be reported for
+                    // the struct field.
+                    #[allow(unused_variables, nonstandard_style)]
                     let #ident = #accessor;
                 }
             }
@@ -325,7 +332,9 @@ fn init_fields(
                         #value_init
                     }
                     #(#cfgs)*
-                    #[allow(unused_variables)]
+                    // Allow `nonstandard_style` since the same warning is going to be reported for
+                    // the struct field.
+                    #[allow(unused_variables, nonstandard_style)]
                     let #ident = #accessor;
                 }
             }