♻️ remove a useless error management and simplify the code

Issue: CLDSRV-823

Author: DarkIsDude

lib/api/bucketGet.js

@@ -388,24 +388,19 @@ async function bucketGet(authInfo, request, log, callback) {
         listParams.marker = params.marker;
     }
 
-    let error;
     let bucket;
 
     try {
         const standardMetadataValidateBucketPromised = promisify(standardMetadataValidateBucket);
         bucket = await standardMetadataValidateBucketPromised(metadataValParams, request.actionImplicitDenies, log);
     } catch (err) {
-        error = err;
+        log.debug('error processing request', { err });
+        monitoring.promMetrics('GET', bucketName, err.code, 'listBucket');
+        throw err;
     }
 
     const corsHeaders = collectCorsHeaders(request.headers.origin, request.method, bucket);
 
-    if (error) {
-        log.debug('error processing request', { error });
-        monitoring.promMetrics('GET', bucketName, error.code, 'listBucket');
-        error.additionalResHeaders = corsHeaders;
-        throw error;
-    }
     if (params.versions !== undefined) {
         listParams.listingType = 'DelimiterVersions';
         delete listParams.marker;