Using recoll as an embedded document opener for the unity lens was broken

src/qtgui/rclmain_w.cpp

@@ -424,6 +424,14 @@ void RclMain::viewUrl()
     if (!rcldb->getDoc(udi, doc) || doc.pc == -1)
 	return;
 
+    // StartNativeViewer needs a db source to call getEnclosing() on.
+    Rcl::Query *query = new Rcl::Query(rcldb);
+    DocSequenceDb *src = 
+	new DocSequenceDb(RefCntr<Rcl::Query>(query), "", 
+			  RefCntr<Rcl::SearchData>(new Rcl::SearchData));
+    m_source = RefCntr<DocSequence>(src);
+
+
     // Start a native viewer if the mimetype has one defined, else a
     // preview.
     string apptag;

src/query/docseqdb.cpp

@@ -122,8 +122,9 @@ int DocSequenceDb::getFirstMatchPage(Rcl::Doc &doc, string& term)
 
 bool DocSequenceDb::getEnclosing(Rcl::Doc& doc, Rcl::Doc& pdoc) 
 {
-    if (!setQuery())
-	return false;
+    // Note: no need for setQuery here, we're just passing through a
+    // query-independant request
+
     string udi;
     if (!FileInterner::getEnclosing(doc.url, doc.ipath, pdoc.url, pdoc.ipath,
                                     udi))