Remove usage of errno

Author: Kobzol

library/std_detect/src/detect/os/linux/mod.rs

@@ -15,7 +15,7 @@ fn read_file(orig_path: &str) -> Result<Vec<u8>, alloc::string::String> {
     unsafe {
         let file = libc::open(path.as_ptr() as *const libc::c_char, libc::O_RDONLY);
         if file == -1 {
-            return Err(format!("Cannot open file at {orig_path}: {}", *libc::__errno_location()));
+            return Err(format!("Cannot open file at {orig_path}"));
         }
 
         let mut data = Vec::new();
@@ -25,10 +25,7 @@ fn read_file(orig_path: &str) -> Result<Vec<u8>, alloc::string::String> {
             match libc::read(file, spare.as_mut_ptr() as *mut _, spare.len()) {
                 -1 => {
                     libc::close(file);
-                    return Err(format!(
-                        "Error while reading from file at {orig_path}: {}",
-                        *libc::__errno_location()
-                    ));
+                    return Err(format!("Error while reading from file at {orig_path}"));
                 }
                 0 => break,
                 n => data.set_len(data.len() + n as usize),