Address PR

src/services/services.ts

@@ -6011,7 +6011,7 @@ namespace ts {
                 // the function will add any found symbol of the property-name, then its sub-routine will call
                 // getPropertySymbolsFromBaseTypes again to walk up any base types to prevent revisiting already
                 // visited symbol, interface "C", the sub-routine will pass the current symbol as previousIterationSymbol.
-                if (previousIterationSymbolsCache && previousIterationSymbolsCache[symbol.name] === symbol) {
+                if (hasProperty(previousIterationSymbolsCache, symbol.name)) {
                     return;
                 }