Remove a couple of uses of interior mutability around statics

compiler/rustc_codegen_gcc/src/consts.rs

@@ -67,7 +67,7 @@ impl<'gcc, 'tcx> StaticCodegenMethods for CodegenCx<'gcc, 'tcx> {
     }
 
     #[cfg_attr(not(feature = "master"), allow(unused_mut))]
-    fn codegen_static(&self, def_id: DefId) {
+    fn codegen_static(&mut self, def_id: DefId) {
         let attrs = self.tcx.codegen_fn_attrs(def_id);
 
         let Ok((value, alloc)) = codegen_static_initializer(self, def_id) else {
@@ -162,11 +162,11 @@ impl<'gcc, 'tcx> StaticCodegenMethods for CodegenCx<'gcc, 'tcx> {
     }
 
     /// Add a global value to a list to be stored in the `llvm.used` variable, an array of i8*.
-    fn add_used_global(&self, _global: RValue<'gcc>) {
+    fn add_used_global(&mut self, _global: RValue<'gcc>) {
         // TODO(antoyo)
     }
 
-    fn add_compiler_used_global(&self, global: RValue<'gcc>) {
+    fn add_compiler_used_global(&mut self, global: RValue<'gcc>) {
         // NOTE: seems like GCC does not make the distinction between compiler.used and used.
         self.add_used_global(global);
     }