Fix no_function build.

src/eval/expr.rs

@@ -93,7 +93,9 @@ impl Engine {
                     #[cfg(not(feature = "no_function"))]
                     if namespace.len() == 1 && namespace[0].name == crate::engine::KEYWORD_GLOBAL {
                         if let Some(ref constants) = global.constants {
-                            if let Some(value) = crate::func::locked_write(constants).get_mut(var_name) {
+                            if let Some(value) =
+                                crate::func::locked_write(constants).get_mut(var_name)
+                            {
                                 let mut target: Target = value.clone().into();
                                 // Module variables are constant
                                 target.set_access_mode(AccessMode::ReadOnly);

src/eval/global_state.rs

@@ -22,9 +22,6 @@ use std::{
 #[derive(Clone)]
 pub struct GlobalRuntimeState<'a> {
     /// Stack of module names.
-    //
-    // We cannot use Cow<str> here because `eval` may load a [module][Module] and
-    // the module name will live beyond the AST of the eval script text.
     keys: StaticVec<Identifier>,
     /// Stack of imported [modules][Module].
     modules: StaticVec<Shared<Module>>,