Amjad50/OS: updated user_std to 0.2.0 small change in errors

updated `InvalidErrorCode` to remove the code, which resulted in making
it smaller, from 16 to 8 bytes

Author: Amjad50

Cargo.lock

@@ -83,19 +83,19 @@ checksum = "56fc6cf8dc8c4158eed8649f9b8b0ea1518eb62b544fe9490d66fa0b349eafe9"
 
 [[package]]
 name = "amjad_os_kernel_user_link"
-version = "0.1.5"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a0c160b99e788822b2668c0dbc33dca5d77f45279c6d3ff61c1693b9442e0b10"
+checksum = "e8d1291ea9cf6043bfa74865f170b13a220ae79c0d253d1b9ad57e90be137247"
 dependencies = [
  "compiler_builtins",
  "rustc-std-workspace-core",
 ]
 
 [[package]]
 name = "amjad_os_user_std"
-version = "0.1.8"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "829cdb1b3c937cc08902c1d7c477d2ac628e6cdf83e1979dff18c048e9438663"
+checksum = "e0e98406c58607f4f54f9ec8e5ffbf7570daba78c343ac640b27f094d62fe3f7"
 dependencies = [
  "amjad_os_kernel_user_link",
  "compiler_builtins",

library/std/Cargo.toml

@@ -59,7 +59,7 @@ r-efi-alloc = { version = "1.0.0", features = ['rustc-dep-of-std']}
 
 [target.'cfg(target_os = "amjad_os")'.dependencies]
 # This is from `https://github.com/Amjad50/OS`, i.e. it must be run from that context
-user_std = { version = "0.1.8", package = "amjad_os_user_std", features = ['rustc-dep-of-std'] }
+user_std = { version = "0.2.0", package = "amjad_os_user_std", features = ['rustc-dep-of-std'] }
 
 [features]
 backtrace = [

library/std/src/sys/amjad_os/mod.rs

@@ -81,7 +81,7 @@ fn syscall_to_io_error(e: SyscallError) -> crate::io::Error {
             crate::io::Error::new(crate::io::ErrorKind::InvalidInput, error_str)
         }
         // should never happen
-        SyscallError::SyscallNotFound | SyscallError::InvalidErrorCode(_) => unreachable!(),
+        SyscallError::SyscallNotFound | SyscallError::InvalidError => unreachable!(),
         // not applicable
         SyscallError::CouldNotLoadElf
         | SyscallError::CouldNotAllocateProcess