Track whether a PatternBindingDecl theoretically

declares storage or not.

Swift SVN r12942

lib/Serialization/Serialization.cpp

@@ -1044,7 +1044,8 @@ void Serializer::writeDecl(const Decl *D) {
     unsigned abbrCode = DeclTypeAbbrCodes[PatternBindingLayout::Code];
     PatternBindingLayout::emitRecord(Out, ScratchRecord, abbrCode,
                                      addDeclRef(DC), binding->isImplicit(),
-                                     binding->isStatic());
+                                     binding->isStatic(),
+                                     binding->hasStorage());
 
     writePattern(binding->getPattern());
     // Ignore initializer; external clients don't need to know about it.