Do not crash if link does not have an action
(cherry picked from commit 147ae4bf76a85768c9ed729ca10ee3dae93b8876)
diff --git a/utils/HtmlOutputDev.cc b/utils/HtmlOutputDev.cc
index ede5700..f897572 100644
--- a/utils/HtmlOutputDev.cc
+++ b/utils/HtmlOutputDev.cc
@@ -1413,6 +1413,8 @@
 
 GooString* HtmlOutputDev::getLinkDest(Link *link,Catalog* catalog){
   char *p;
+  if (!link->getAction())
+    return new GooString();
   switch(link->getAction()->getKind()) 
   {
       case actionGoTo: