gpcc-copy-to-conditionally-hidden-fields.php: Fixed a potential fatal error.

Author: saifsultanc

gp-copy-cat/gpcc-copy-to-conditionally-hidden-fields.php

@@ -32,7 +32,7 @@
 			$source_field    = GFAPI::get_field( $form, $target['source'] );
 			$source_values   = $source_field->get_value_submission( array() );
 			$condition_field = GFAPI::get_field( $form, $target['condition'] );
-			$condition_value = $condition_field->get_value_submission( $entry );
+			$condition_value = $condition_field ? $condition_field->get_value_submission( $entry ) : null;
 
 			// for multi-input fields, we need to check the index
 			// to see if the condition is met.