Fix edge case in Encoder with DGS segments

Author: sabas

src/EDI/Encoder.php

@@ -85,6 +85,9 @@ public function encodeSegment($row)
             if (!is_array($row[$i])) {
                 $elm = $this->escapeValue($row[$i]);
             } else {
+                if (count($row[$i]) == 1 && is_array(reset($row[$i]))) {
+                    $row[$i] = array_pop($row[$i]);
+                }
                 foreach ($row[$i] as &$temp) {
                     $temp = $this->escapeValue($temp);
                 }

src/EDI/Parser.php

@@ -389,4 +389,4 @@ public function getMessageDirectory()
     {
         return $this->messageDirectory;
     }
-}
+}