fix notice

diff --git a/includes/Parser.php b/includes/Parser.php
index d5e57bd..5d0aa97 100644 (file)
--- a/includes/Parser.php
+++ b/includes/Parser.php
@@ -666,7 +666,7 @@ class Parser
                        $state["em"] = $token["pos"];
                } else { # not $em and not $strong
                        $s .= "<strong><em>";
-                       $state["strong"] = $state["em"] = $token["pos"];
+                       $state["strong"] = $state["em"] = isset($token["pos"]) ? $token["pos"] : true;
                }
                return $s;
        }