fix directorySize check for zip64

Author: goloveychuk

src/archive/zip/reader.go

@@ -604,7 +604,7 @@ func readDirectoryEnd(r io.ReaderAt, size int64) (dir *directoryEnd, baseOffset
 	d.comment = string(b[:l])
 
 	// These values mean that the file can be a zip64 file
-	if d.directoryRecords == 0xffff || d.directorySize == 0xffff || d.directoryOffset == 0xffffffff {
+	if d.directoryRecords == 0xffff || d.directorySize == 0xffffffff || d.directoryOffset == 0xffffffff {
 		p, err := findDirectory64End(r, directoryEndOffset)
 		if err == nil && p >= 0 {
 			directoryEndOffset = p