simplify return by omitting variable declaration

tfmigrate/state_replace_provider_action.go

@@ -32,6 +32,5 @@ func (a *StateReplaceProviderAction) StateUpdate(ctx context.Context, tf tfexec.
 	// Disable unnecessary state backup here,
 	// because we never restore state from the backup generated by each state action.
 	// The state replace-provider command doesn't provide a way to disable it, so we backup to /dev/null.
-	newState, err := tf.StateReplaceProvider(ctx, state, a.source, a.destination, "-backup=/dev/null", "-auto-approve")
-	return newState, err
+	return tf.StateReplaceProvider(ctx, state, a.source, a.destination, "-backup=/dev/null", "-auto-approve")
 }