Add is_array check for empty extra options.

Author: tptrixtop

src/Adapter/Driver/Pgsql/Pgsql.php

@@ -61,7 +61,9 @@ public function __construct(
             $connection = new Connection($connection);
         }
 
-        $this->options = array_merge($this->options, $options);
+        if (is_array($options)) {
+            $this->options = array_merge($this->options, $options);
+        }
         $this->registerConnection($connection);
         $this->registerStatementPrototype(($statementPrototype) ?: new Statement());
         $this->registerResultPrototype(($resultPrototype) ?: new Result());