Merge pull request #659 from greezybacon/issue/652

forms: Better failsafe for __toString

Reviewed-By: Peter Rotich <peter@osticket.com>

include/class.dynamic_forms.php

@@ -729,7 +729,8 @@ class DynamicFormEntryAnswer extends VerySimpleModel {
     }
 
     function __toString() {
-        return $this->toString();
+        $v = $this->toString();
+        return is_string($v) ? $v : (string) $this->getValue();
     }
 }