refactor(tazjin/rlox): Call resolver from interpreter

This makes the interpreter API a bit cleaner and allows for tighter
integration between the two parts (e.g. for static globals, which are
unhandled in the resolver right now).

Change-Id: I363714dc2e13cefa7731b54326573e0b871295d6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2407
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI

users/tazjin/rlox/src/resolver.rs

@@ -186,8 +186,7 @@ impl<'a> Resolver<'a> {
     }
 }
 
-pub fn resolve(mut block: parser::Block) -> Result<parser::Block, Error> {
+pub fn resolve(block: &mut parser::Block) -> Result<(), Error> {
     let mut resolver: Resolver = Default::default();
-    resolver.resolve(&mut block)?;
-    Ok(block)
+    resolver.resolve(block)
 }