Fix captures capturing constants

Author: Victorious3

src/typechecking.pr

@@ -4348,7 +4348,11 @@ export def lookup_identifier_types(node: &parser::Node, state: &State) {
 def get_value(node: &parser::Node, state: &State, force_compile: bool = true, dry_run: bool = false) -> &scope::Value {
     var value = scope::get(state.scope, node, force_compile = force_compile, dry_run = dry_run) !&scope::Value
     let current_function = state.current_function()
-    if current_function.is_closure and value and not value.global and value.current_function != current_function {
+    if current_function.is_closure and value and
+        value.kind == scope::ValueKind::VALUE and 
+        value.modifier != parser::VarDecl::CONST and
+        not value.global and value.current_function != current_function {
+
         let len = state.function_stack.length
         for var i in 0..len {
             node.svalue = null