simplify

Author: scivision

+stdlib/+dotnet/disk_available.m

@@ -2,17 +2,13 @@
 
 function i = disk_available(file)
 
-i = uint64.empty;
-if ~stdlib.exists(file)
-  return
-end
-
 try
 % absolutizing is necessary for Windows especially
   i = System.IO.DriveInfo(System.IO.Path.GetFullPath(file)).AvailableFreeSpace();
 % https://learn.microsoft.com/en-us/dotnet/api/system.io.driveinfo.availablefreespace
 catch e
   dotnetException(e)
+  i = [];
 end
 
 i = uint64(i);

+stdlib/+dotnet/disk_capacity.m

@@ -2,17 +2,13 @@
 
 function i = disk_capacity(file)
 
-i = uint64.empty;
-if ~stdlib.exists(file)
-  return
-end
-
 try
 % absolutizing is necessary for Windows especially
   i = System.IO.DriveInfo(System.IO.Path.GetFullPath(file)).TotalSize();
 % https://learn.microsoft.com/en-us/dotnet/api/system.io.driveinfo.totalsize
 catch e
   dotnetException(e)
+  i = [];
 end
 
 i = uint64(i);

+stdlib/+dotnet/filesystem_type.m

@@ -3,17 +3,13 @@
 function t = filesystem_type(file)
 
 
-t = '';
-if ~stdlib.exists(file)
-  return
-end
-
 % https://learn.microsoft.com/en-us/dotnet/api/system.io.driveinfo.driveformat
 
 try
   t = char(System.IO.DriveInfo(System.IO.Path.GetFullPath(file)).DriveFormat);
 catch e
   dotnetException(e)
+  t = '';
 end
 
 end