avro

If avrogencpp encounters a schema with reserved words in it, it will happily generate a header with fields that are reserved words. (#1071)

The decorate function in avrogencpp was overloaded a reference to an std::string or const avro::Name& to allow this.
The existing decorate function is only called on types, but it should also be called on names as well, which this patch fixes

For example:

{
  "type" : "record",
  "name" : "Words",
  "namespace" : "org.apache.avro.example",
  "fields" : [ {
    "name" : "alignas",
    "type" : "string"
  }, {
    "name" : "alignof",
    "type" : "string"
  }, {
    "name" : "and",
    "type" : "string"
  }
  ]
}

Will generate the following header file:

struct Words {
    std::string alignas;
    std::string alignof;
    std::string and;
    Words() :
        alignas(std::string()),
        alignof(std::string()),
        and(std::string())
        { }
};

Which cannot be compiled by c++

With this fix, the following will be generated:

struct Words {
    std::string alignas_;
    std::string alignof_;
    std::string and_;
    Words() :
        alignas_(std::string()),
        alignof_(std::string()),
        and_(std::string())
        { }
};

Co-authored-by: Allen Reese <areese999@apple.com>