Simplify literals (after running gofmt -s over the code)

s3/v2sign.go

@@ -14,25 +14,25 @@ import (
 
 // URL parameters that need to be added to the signature
 var s3ParamsToSign = map[string]struct{}{
-	"acl":                          struct{}{},
-	"location":                     struct{}{},
-	"logging":                      struct{}{},
-	"notification":                 struct{}{},
-	"partNumber":                   struct{}{},
-	"policy":                       struct{}{},
-	"requestPayment":               struct{}{},
-	"torrent":                      struct{}{},
-	"uploadId":                     struct{}{},
-	"uploads":                      struct{}{},
-	"versionId":                    struct{}{},
-	"versioning":                   struct{}{},
-	"versions":                     struct{}{},
-	"response-content-type":        struct{}{},
-	"response-content-language":    struct{}{},
-	"response-expires":             struct{}{},
-	"response-cache-control":       struct{}{},
-	"response-content-disposition": struct{}{},
-	"response-content-encoding":    struct{}{},
+	"acl":                          {},
+	"location":                     {},
+	"logging":                      {},
+	"notification":                 {},
+	"partNumber":                   {},
+	"policy":                       {},
+	"requestPayment":               {},
+	"torrent":                      {},
+	"uploadId":                     {},
+	"uploads":                      {},
+	"versionId":                    {},
+	"versioning":                   {},
+	"versions":                     {},
+	"response-content-type":        {},
+	"response-content-language":    {},
+	"response-expires":             {},
+	"response-cache-control":       {},
+	"response-content-disposition": {},
+	"response-content-encoding":    {},
 }
 
 // sign signs requests using v2 auth