Serialization: Actually set VarDecl::isLazyStorageProperty() when deserializing

Author: slavapestov

lib/Serialization/Deserialization.cpp

@@ -2858,6 +2858,8 @@ class swift::DeclDeserializer {
           LazyStoragePropertyRequest{var}, std::move(storage));
     }
 
+    var->setLazyStorageProperty(isLazyStorageProperty);
+
     // If there are any backing properties, record them.
     if (numBackingProperties > 0) {
       VarDecl *backingVar = cast<VarDecl>(MF.getDecl(backingPropertyIDs[0]));