Fix ERROR_FLAG constant

Author: newpavlov

src/error.rs

@@ -9,7 +9,7 @@ cfg_if::cfg_if!(
     if #[cfg(target_os = "uefi")] {
         type RawOsError = usize;
         type NonZeroRawOsError = core::num::NonZeroUsize;
-        const ERROR_FLAG: u64 = 1 << (usize::BITS - 1);
+        const UEFI_ERROR_FLAG: RawOsError = 1 << (usize::BITS - 1);
     } else {
         type RawOsError = i32;
         type NonZeroRawOsError = core::num::NonZeroI32;
@@ -67,7 +67,7 @@ impl Error {
     pub(super) fn from_os_error(code: RawOsError) -> Self {
         match NonZeroRawOsError::new(code) {
             #[cfg(target_os = "uefi")]
-            Some(code) if code.get() & ERROR_FLAG != 0 => Self(code),
+            Some(code) if code.get() & UEFI_ERROR_FLAG != 0 => Self(code),
             #[cfg(not(target_os = "uefi"))]
             Some(code) if code.get() < 0 => Self(code),
             _ => Self::UNEXPECTED,
@@ -91,7 +91,7 @@ impl Error {
         let code = self.0.get();
         #[cfg(target_os = "uefi")]
         {
-            if code & ERROR_FLAG != 0 {
+            if code & UEFI_ERROR_FLAG != 0 {
                 Some(code)
             } else {
                 None