MAGETWO-35079: Price of Simple Product isn't recalculated after selecting options on product page

 - Cover attribute output in {{escapeHtml}} call

Author: guz-anton

app/code/Magento/Catalog/view/frontend/templates/product/view/options/type/text.phtml

@@ -34,7 +34,7 @@ $class = ($_option->getIsRequire()) ? ' required' : '';
                    id="options_<?php echo $_option->getId() ?>_text"
                    class="input-text product-custom-option"
                    <?php if (!empty($_textValidate)) {?>
-                   data-validate='<?php echo json_encode($_textValidate);?>'
+                   data-validate="<?php echo  $block->escapeHtml(json_encode($_textValidate));?>"
                    <?php } ?>
                    name="options[<?php echo $_option->getId() ?>]"
                    value="<?php echo $block->escapeHtml($block->getDefaultValue()) ?>"/>
@@ -50,7 +50,7 @@ $class = ($_option->getIsRequire()) ? ' required' : '';
             <textarea id="options_<?php echo $_option->getId() ?>_text"
                       class="product-custom-option"
                     <?php if (!empty($_textAreaValidate)) {?>
-                        data-validate='<?php echo json_encode($_textAreaValidate);?>'
+                        data-validate="<?php echo $block->escapeHtml(json_encode($_textAreaValidate));?>"
                     <?php } ?>
                       name="options[<?php echo $_option->getId() ?>]"
                       rows="5"