Fix gofmt

ioutil.go

@@ -48,12 +48,12 @@ func ReadFile(fs Filesystem, filename string) ([]byte, error) {
 		}
 	}
 
-    // As initial capacity for readAll, use n + a little extra in case Size is
-    // zero, and to avoid another allocation after Read has filled the buffer.
-    // The readAll call will read into its allocated internal buffer cheaply. If
-    // the size was wrong, we'll either waste some space off the end or
-    // reallocate as needed, but in the overwhelmingly common case we'll get it
-    // just right.
+	// As initial capacity for readAll, use n + a little extra in case Size is
+	// zero, and to avoid another allocation after Read has filled the buffer.
+	// The readAll call will read into its allocated internal buffer cheaply. If
+	// the size was wrong, we'll either waste some space off the end or
+	// reallocate as needed, but in the overwhelmingly common case we'll get it
+	// just right.
 	return readAll(f, n+bytes.MinRead)
 }