Remove dependency on GetModuleHandleW and CreateEventW

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

Author: seritools

library/std/src/sys/windows/c/windows_sys.lst

@@ -2451,7 +2451,6 @@ Windows.Win32.System.Kernel.FLOATING_SAVE_AREA
 Windows.Win32.System.Kernel.OBJ_DONT_REPARSE
 Windows.Win32.System.LibraryLoader.GetModuleFileNameW
 Windows.Win32.System.LibraryLoader.GetModuleHandleA
-Windows.Win32.System.LibraryLoader.GetModuleHandleW
 Windows.Win32.System.LibraryLoader.GetProcAddress
 Windows.Win32.System.Performance.QueryPerformanceCounter
 Windows.Win32.System.Performance.QueryPerformanceFrequency
@@ -2494,7 +2493,7 @@ Windows.Win32.System.Threading.CREATE_SEPARATE_WOW_VDM
 Windows.Win32.System.Threading.CREATE_SHARED_WOW_VDM
 Windows.Win32.System.Threading.CREATE_SUSPENDED
 Windows.Win32.System.Threading.CREATE_UNICODE_ENVIRONMENT
-Windows.Win32.System.Threading.CreateEventW
+Windows.Win32.System.Threading.CreateEventA
 Windows.Win32.System.Threading.CreateProcessW
 Windows.Win32.System.Threading.CreateThread
 Windows.Win32.System.Threading.DEBUG_ONLY_THIS_PROCESS

library/std/src/sys/windows/c/windows_sys.rs

@@ -45,11 +45,11 @@ extern "system" {
 }
 #[link(name = "kernel32")]
 extern "system" {
-    pub fn CreateEventW(
+    pub fn CreateEventA(
         lpeventattributes: *const SECURITY_ATTRIBUTES,
         bmanualreset: BOOL,
         binitialstate: BOOL,
-        lpname: PCWSTR,
+        lpname: PCSTR,
     ) -> HANDLE;
 }
 #[link(name = "kernel32")]
@@ -247,11 +247,7 @@ extern "system" {
 #[link(name = "kernel32")]
 extern "system" {
     pub fn GetModuleHandleA(lpmodulename: PCSTR) -> HMODULE;
-}
-#[link(name = "kernel32")]
-extern "system" {
-    pub fn GetModuleHandleW(lpmodulename: PCWSTR) -> HMODULE;
-}
+
 #[link(name = "kernel32")]
 extern "system" {
     pub fn GetOverlappedResult(

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

@@ -40,11 +40,7 @@ pub fn error_string(mut errnum: i32) -> String {
         // `[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(b"NTDLL.DLL\0".as_ptr() as *const i8);
 
             if !module.is_null() {
                 errnum ^= c::FACILITY_NT_BIT as i32;