Fixed a mistake with length of fileComment.

Sources/ZipContainer.swift

@@ -58,7 +58,7 @@ public class ZipEntry: ContainerEntry {
     private var pointerData: DataWithPointer
 
     /// Name of the file or directory.
-    public var name: String? {
+    public var name: String {
         return self.cdEntry.fileName
     }
 
@@ -72,6 +72,14 @@ public class ZipEntry: ContainerEntry {
         return self.cdEntry.externalFileAttributes
     }
 
+    public var size: Int {
+        return Int(truncatingBitPattern: cdEntry.uncompSize)
+    }
+
+    public var isDirectory: Bool {
+        return false // TODO: Implement.
+    }
+
     /**
      Returns data associated with this entry.
 
@@ -396,7 +404,7 @@ struct CentralDirectoryEntry {
             }
         }
 
-        guard let fileComment = String(data: Data(bytes: pointerData.alignedBytes(count: fileNameLength)),
+        guard let fileComment = String(data: Data(bytes: pointerData.alignedBytes(count: fileCommentLength)),
                                     encoding: .utf8)
             else { throw ZipError.wrongTextField }
         self.fileComment = fileComment