#3134 Fix regression on unselected lineitem

CRM/Financial/BAO/Order.php

@@ -793,12 +793,14 @@ class CRM_Financial_BAO_Order {
     }
     else {
       foreach ($this->getPriceOptions() as $fieldID => $valueID) {
-        $this->setPriceSetIDFromSelectedField($fieldID);
-        $throwAwayArray = [];
-        // @todo - still using getLine for now but better to bring it to this class & do a better job.
-        $newLines = CRM_Price_BAO_PriceSet::getLine($params, $throwAwayArray, $this->getPriceSetID(), $this->getPriceFieldSpec($fieldID), $fieldID)[1];
-        foreach ($newLines as $newLine) {
-          $lineItems[$newLine['price_field_value_id']] = $newLine;
+        if ($valueID !== '') {
+          $this->setPriceSetIDFromSelectedField($fieldID);
+          $throwAwayArray = [];
+          // @todo - still using getLine for now but better to bring it to this class & do a better job.
+          $newLines = CRM_Price_BAO_PriceSet::getLine($params, $throwAwayArray, $this->getPriceSetID(), $this->getPriceFieldSpec($fieldID), $fieldID)[1];
+          foreach ($newLines as $newLine) {
+            $lineItems[$newLine['price_field_value_id']] = $newLine;
+          }
         }
       }
     }