LOK: support password-protected PDF docs

Change-Id: I1a1177ae7eb5af4ade2863dedf8bab7188152c5e
Reviewed-on: https://gerrit.libreoffice.org/45547Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
Tested-by: Ashod Nakashian <ashnakash@gmail.com>

desktop/source/lib/lokinteractionhandler.cxx

@@ -250,14 +250,22 @@ bool LOKInteractionHandler::handlePasswordRequest(const uno::Sequence<uno::Refer
 
     OString sUrl;
 
-    task::DocumentPasswordRequest2 passwordRequest;
+    task::DocumentPasswordRequest passwordRequest;
     if (rRequest >>= passwordRequest)
     {
-        bIsRequestPasswordToModify = passwordRequest.IsRequestPasswordToModify;
+        bIsRequestPasswordToModify = false;
         sUrl = passwordRequest.Name.toUtf8();
         bPasswordRequestFound = true;
     }
 
+    task::DocumentPasswordRequest2 passwordRequest2;
+    if (rRequest >>= passwordRequest2)
+    {
+        bIsRequestPasswordToModify = passwordRequest2.IsRequestPasswordToModify;
+        sUrl = passwordRequest2.Name.toUtf8();
+        bPasswordRequestFound = true;
+    }
+
     task::DocumentMSPasswordRequest2 passwordMSRequest;
     if (rRequest >>= passwordMSRequest)
     {