Add function return type in outline.

Append the function return type in outline (after arguments), consistently with
variable type indication.

Change-Id: I1cc6d69634fc83227eb7fc9e3a0ee2ad6ca6ace8
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

src/libs/cplusplus/OverviewModel.cpp

@@ -181,11 +181,12 @@ QVariant OverviewModel::data(const QModelIndex &index, int role) const
                 name = QLatin1Char('-') + name;
         } else if (! symbol->isScope() || symbol->isFunction()) {
             QString type = _overview.prettyType(symbol->type());
-            if (! type.isEmpty()) {
-                if (! symbol->type()->isFunctionType())
-                    name += QLatin1String(": ");
+            if (Function *f = symbol->type()->asFunctionType()) {
                 name += type;
+                type = _overview.prettyType(f->returnType());
             }
+            if (! type.isEmpty())
+                name += QLatin1String(": ") + type;
         }
         return name;
     }