fix: Fix potential NameError: parameter_map in convert_dataclass_to_schema() (regression introduced in 4.2.6)

Author: NiklasRosenstein

databind.core/.changelog/_unreleased.toml

@@ -0,0 +1,5 @@
+[[entries]]
+id = "8a6d54b8-0898-465a-a34c-6d5b37dab337"
+type = "fix"
+description = "Fix potential `NameError: parameter_map` in `convert_dataclass_to_schema()` (regression introduced in 4.2.6)"
+author = "@NiklasRosenstein"

databind.core/src/databind/core/schema.py

@@ -205,14 +205,13 @@ class A(Generic[T]):
     fields: t.Dict[str, Field] = {}
     while queue:
         hint = queue.pop(0)
+        parameter_map = hint.get_parameter_map()
 
         if hint.type in eval_context_by_type:
             # Make sure forward references are resolved.
             hint = hint.evaluate(eval_context_by_type[hint.type])  # type: ignore[assignment]
             assert isinstance(hint, ClassTypeHint)
 
-            parameter_map = hint.get_parameter_map()
-
             for field in dataclasses.fields(hint.type):
                 if not field.init:
                     # If we cannot initialize the field in the constructor, we should also