message: fix bug in file sas
diff: @@ -117,7 +117,7 @@ namespace Azure { namespace Storage { namespace Files { namespace Shares {
  {
  builder.AppendQuery("sp", Permissions);
  }
  - builder.AppendQuery("sig", signature, true);
  + builder.AppendQuery("sig", signature);
  if (!CacheControl.empty())
  {
  builder.AppendQuery("rscc", CacheControl);
  