Fix opening empty archives

Author: gave92

Files.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.31911.196
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.31903.286
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Files.Launcher", "Files.Launcher\Files.Launcher.csproj", "{533F9E86-EE0A-4FCB-B70C-F29532C1B787}"
 	ProjectSection(ProjectDependencies) = postProject

Files/Filesystem/StorageItems/ZipStorageFile.cs

@@ -408,7 +408,7 @@ await NativeFileOperationsHelper.OpenProtectedFileForRead(ContainerPath) :
                     {
                         return null;
                     }
-                    return new ZipFile(new FileStream(hFile, readWrite ? FileAccess.ReadWrite : FileAccess.Read));
+                    return new ZipFile((Stream)new FileStream(hFile, readWrite ? FileAccess.ReadWrite : FileAccess.Read));
                 }
             });
         }

Files/Filesystem/StorageItems/ZipStorageFolder.cs

@@ -580,7 +580,7 @@ private IAsyncOperation<ZipFile> OpenZipFileAsync(FileAccessMode accessMode)
                     {
                         return null;
                     }
-                    return new ZipFile(new FileStream(hFile, readWrite ? FileAccess.ReadWrite : FileAccess.Read));
+                    return new ZipFile((Stream)new FileStream(hFile, readWrite ? FileAccess.ReadWrite : FileAccess.Read));
                 }
             });
         }