Locator: Enable to show C++ type aliases

These were not showing up in any global symbol list so far.

Fixes: QTCREATORBUG-5800
Change-Id: I8e5c3b9b26f09d8cbcd31431e28c103da05d9bf8
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cpptools/cpplocatordata.cpp

@@ -35,7 +35,8 @@ CppLocatorData::CppLocatorData()
 {
     m_search.setSymbolsToSearchFor(SymbolSearcher::Enums |
                                    SymbolSearcher::Classes |
-                                   SymbolSearcher::Functions);
+                                   SymbolSearcher::Functions |
+                                   SymbolSearcher::TypeAliases);
     m_pendingDocuments.reserve(MaxPendingDocuments);
 }