Patch-Magento_Customer-M2.1.9-array-street-line.patch

--- Model/Address/AbstractAddress.php	2017-10-05 12:45:52.908435084 +0300
+++ Model/Address/AbstractAddress.php	2017-10-05 12:46:51.317138798 +0300
@@ -263,7 +263,7 @@
     {
         if (is_array($key)) {
             $key = $this->_implodeArrayField($key);
-        } elseif (is_array($value) && !empty($value) && $this->isAddressMultilineAttribute($key)) {
+        } elseif (is_array($value) && $this->isAddressMultilineAttribute($key)) {
             $value = $this->_implodeArrayValues($value);
         }
         return parent::setData($key, $value);
@@ -303,7 +303,11 @@
      */
     protected function _implodeArrayValues($value)
     {
-        if (is_array($value) && count($value)) {
+        if (is_array($value)) {
+            if (!count($value)) {
+                return '';
+            }
+
             $isScalar = false;
             foreach ($value as $val) {
                 if (is_scalar($val)) {