Fix Windows Clippy warnings

src/timer/windows_timer.rs

@@ -34,11 +34,11 @@ use crate::quantity::{nanosecond, Information, Time, Zero};
 
 #[cfg(not(feature = "windows_process_extensions_main_thread_handle"))]
 #[allow(non_upper_case_globals)]
-static NtResumeProcess: Lazy<unsafe extern "system" fn(ProcessHandle: HANDLE) -> NTSTATUS> =
+static NtResumeProcess: Lazy<unsafe extern "system" fn(process_handle: HANDLE) -> NTSTATUS> =
     Lazy::new(|| {
         // SAFETY: Getting the module handle for ntdll.dll is safe
         let ntdll = unsafe { GetModuleHandleW(w!("ntdll.dll")) };
-        assert!(ntdll != std::ptr::null_mut(), "GetModuleHandleW failed");
+        assert!(!ntdll.is_null(), "GetModuleHandleW failed");
 
         // SAFETY: The ntdll handle is valid
         let nt_resume_process = unsafe { GetProcAddress(ntdll, s!("NtResumeProcess")) };
@@ -57,10 +57,7 @@ impl CPUTimer {
 
         // SAFETY: Creating a new job object is safe
         let job_object = unsafe { CreateJobObjectW(ptr::null_mut(), ptr::null_mut()) };
-        assert!(
-            job_object != std::ptr::null_mut(),
-            "CreateJobObjectW failed"
-        );
+        assert!(!job_object.is_null(), "CreateJobObjectW failed");
 
         // SAFETY: The job object handle is valid
         let ret = unsafe { AssignProcessToJobObject(job_object, child_handle) };