wgsl: fix clippy

Author: Firestar99

crates/rustc_codegen_spirv/src/link.rs

@@ -313,10 +313,8 @@ fn post_link_single_module(
         drop(save_modules_timer);
     }
 
-    if let Ok(transpile) = should_transpile(sess) {
-        if let Some(transpile) = transpile {
-            transpile(sess, cg_args, &spv_binary, out_filename).ok();
-        }
+    if let Ok(Some(transpile)) = should_transpile(sess) {
+        transpile(sess, cg_args, &spv_binary, out_filename).ok();
     }
 }
 

crates/rustc_codegen_spirv/src/naga_transpile.rs

@@ -21,7 +21,7 @@ pub fn should_transpile(sess: &Session) -> Result<Option<NagaTranspile>, ErrorGu
         SpirvTargetEnv::Wgsl => Err(()),
         _ => Ok(None),
     };
-    result.map_err(|_| {
+    result.map_err(|_e| {
         sess.dcx().err(format!(
             "Target {} requires feature \"naga\" on rustc_codegen_spirv",
             target.target_triple()