Remove dependency on GetModuleHandleW and CreateEventW

Just use the `A` variants instead (already imported anyways)

Author: seritools

library/std/src/sys/pal/windows/fs.rs

@@ -338,7 +338,7 @@ impl File {
     fn acquire_lock(&self, flags: c::LOCK_FILE_FLAGS) -> io::Result<()> {
         unsafe {
             let mut overlapped: c::OVERLAPPED = mem::zeroed();
-            let event = c::CreateEventW(ptr::null_mut(), c::FALSE, c::FALSE, ptr::null());
+            let event = c::CreateEventA(ptr::null_mut(), c::FALSE, c::FALSE, ptr::null());
             if event.is_null() {
                 return Err(io::Error::last_os_error());
             }

library/std/src/sys/pal/windows/handle.rs

@@ -23,7 +23,7 @@ impl Handle {
     pub fn new_event(manual: bool, init: bool) -> io::Result<Handle> {
         unsafe {
             let event =
-                c::CreateEventW(ptr::null_mut(), manual as c::BOOL, init as c::BOOL, ptr::null());
+                c::CreateEventA(ptr::null_mut(), manual as c::BOOL, init as c::BOOL, ptr::null());
             if event.is_null() {
                 Err(io::Error::last_os_error())
             } else {

library/std/src/sys/pal/windows/os.rs

@@ -31,12 +31,7 @@ pub fn error_string(mut errnum: i32) -> String {
         // GetLastError. For more information about Windows error codes, see
         // `[MS-ERREF]`: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/0642cb2f-2075-4469-918c-4441e69c548a
         if (errnum & c::FACILITY_NT_BIT as i32) != 0 {
-            // format according to https://support.microsoft.com/en-us/help/259693
-            const NTDLL_DLL: &[u16] = &[
-                'N' as _, 'T' as _, 'D' as _, 'L' as _, 'L' as _, '.' as _, 'D' as _, 'L' as _,
-                'L' as _, 0,
-            ];
-            module = c::GetModuleHandleW(NTDLL_DLL.as_ptr());
+            module = c::GetModuleHandleA(c"NTDLL.DLL".as_ptr().cast());
 
             if !module.is_null() {
                 errnum ^= c::FACILITY_NT_BIT as i32;