Rollup merge of #99984 - ChrisDenton:fix-miri, r=Mark-Simulacrum

Fix compat.rs for `cfg(miri)`

Fixes #99982

Author: matthiaskrgr

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

@@ -180,8 +180,8 @@ macro_rules! compat_fn_with_fallback {
 
             fn load_from_module(module: Option<Module>) -> F {
                 unsafe {
-                    static symbol_name: &CStr = ansi_str!(sym $symbol);
-                    if let Some(f) = module.and_then(|m| m.proc_address(symbol_name)) {
+                    static SYMBOL_NAME: &CStr = ansi_str!(sym $symbol);
+                    if let Some(f) = module.and_then(|m| m.proc_address(SYMBOL_NAME)) {
                         PTR.store(f.as_ptr(), Ordering::Relaxed);
                         mem::transmute(f)
                     } else {
@@ -251,7 +251,7 @@ macro_rules! compat_fn_optional {
             pub fn option() -> Option<F> {
                 let mut func = NonNull::new(PTR.load(Ordering::Relaxed));
                 if func.is_none() {
-                    Module::new($module).map(preload);
+                    unsafe { Module::new($module).map(preload) };
                     func = NonNull::new(PTR.load(Ordering::Relaxed));
                 }
                 unsafe {
@@ -262,8 +262,8 @@ macro_rules! compat_fn_optional {
             #[allow(unused)]
             pub(in crate::sys) fn preload(module: Module) {
                 unsafe {
-                    let symbol_name = ansi_str!(sym $symbol);
-                    if let Some(f) = module.proc_address(symbol_name) {
+                    static SYMBOL_NAME: &CStr = ansi_str!(sym $symbol);
+                    if let Some(f) = module.proc_address(SYMBOL_NAME) {
                         PTR.store(f.as_ptr(), Ordering::Relaxed);
                     }
                 }