fix mod is not defined error

Summary:
This slipped by during the refactor of
`load_compiled_module_from_source` since the code path wasn't being
executed. Looking into how this operated before the refactor,
`mod.errors` was never accessed, so this is a no-op.

Reviewed By: DinoV

Differential Revision: D50020255

fbshipit-source-id: 9e729eacf8cf18c8deb2ca43b98343f83af3f750

Lib/compiler/strict/compiler.py

@@ -287,7 +287,7 @@ def _compile_static(
                 e.lineno or 1,
                 0,
             )
-            mod.errors.append(err)
+
             if self.raise_on_error:
                 raise err