[LZMA] Add LZMAProperties initializer which reads lzma encoded properties from bytereader

Sources/LZMA/LZMA.swift

@@ -24,7 +24,7 @@ public class LZMA: DecompressionAlgorithm {
      */
     public static func decompress(data: Data) throws -> Data {
         let byteReader = ByteReader(data: data)
-        let properties = try LZMAProperties(lzmaByte: byteReader.byte(), byteReader.int(fromBytes: 4))
+        let properties = try LZMAProperties(byteReader)
         let uncompSize = byteReader.int(fromBytes: 8)
         return try decompress(byteReader, properties, uncompSize)
     }

Sources/LZMA/LZMAProperties.swift

@@ -3,6 +3,8 @@
 //
 // See LICENSE for license information
 
+import BitByteData
+
 public struct LZMAProperties {
 
     public var lc: Int
@@ -43,4 +45,8 @@ public struct LZMAProperties {
         self.dictionarySize = dictSize
     }
 
+    init(_ byteReader: ByteReader) throws {
+        try self.init(lzmaByte: byteReader.byte(), byteReader.int(fromBytes: 4))
+    }
+
 }

Sources/ZIP/ZipContainer.swift

@@ -89,10 +89,7 @@ public class ZipContainer: Container {
         case .lzma:
             #if (!SWCOMPRESSION_POD_ZIP) || (SWCOMPRESSION_POD_ZIP && SWCOMPRESSION_POD_LZMA)
                 byteReader.offset += 4 // Skipping LZMA SDK version and size of properties.
-                fileData = try LZMA.decompress(byteReader,
-                                               LZMAProperties(lzmaByte: byteReader.byte(),
-                                                              byteReader.int(fromBytes: 4)),
-                                               uncompSize.toInt())
+                fileData = try LZMA.decompress(byteReader, LZMAProperties(byteReader), uncompSize.toInt())
             #else
                 throw ZipError.compressionNotSupported
             #endif