Update bindgen requirement from 0.60.1 to 0.61.0 (#84)

* Update bindgen requirement from 0.60.1 to 0.61.0

Updates the requirements on [bindgen](https://github.com/rust-lang/rust-bindgen) to permit the latest version.
- [Release notes](https://github.com/rust-lang/rust-bindgen/releases)
- [Changelog](https://github.com/rust-lang/rust-bindgen/blob/master/CHANGELOG.md)
- [Commits](rust-lang/rust-bindgen@v0.60.1...v0.61.0)

---
updated-dependencies:
- dependency-name: bindgen
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

* Remove unneeded casts

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrew Mackenzie <[email protected]>

Author: dependabot[bot]

Cargo.toml

@@ -31,4 +31,4 @@ name = "dmesg"
 path = "src/dmesg.rs"
 
 [build-dependencies]
-bindgen = { version = "0.60.1", default-features = false, features = ["runtime"] }
+bindgen = { version = "0.61.0", default-features = false, features = ["runtime"] }

src/libproc/helpers.rs

@@ -8,7 +8,7 @@ use std::io::{BufRead, BufReader};
 /// number and a possible message
 pub fn get_errno_with_message(return_code: i32) -> String {
     let e = errno();
-    let code = e.0 as i32;
+    let code = e.0;
     format!("return code = {}, errno = {}, message = '{}'", return_code, code, e)
 }
 

src/libproc/proc_pid.rs

@@ -168,7 +168,7 @@ pub fn listpids(proc_types: ProcType) -> Result<Vec<u32>, String> {
     let mut pids: Vec<u32> = Vec::with_capacity(capacity);
     let buffer_ptr = pids.as_mut_ptr() as *mut c_void;
 
-    let ret = unsafe { proc_listpids(proc_types as u32, 0, buffer_ptr, buffer_size as i32) };
+    let ret = unsafe { proc_listpids(proc_types as u32, 0, buffer_ptr, buffer_size) };
 
     if ret <= 0 {
         Err(helpers::get_errno_with_message(ret))
@@ -246,7 +246,7 @@ pub fn listpidspath(proc_types: ProcType, path: &str) -> Result<Vec<u32>, String
             c_path.as_ptr() as *const c_char,
             0,
             buffer_ptr,
-            buffer_size as i32,
+            buffer_size,
         )
     };