client file requests with long name generate invalid encoding

[iondiode]

Looks like bug is here in mms_client_files.c mmsclient_createFileDirectoryRequest

uint32_t confirmedRequestPduSize = 1 + 2 + 2 + invokeIdSize + 0; /// This line assumes 
                                                                 /// a fixed length octet for the 
                                                                 /// File dir tagged data
uint32_t parameterSize = 0;

if (fileSpecification)
    parameterSize += encodeFileSpecification(0xa0, fileSpecification, NULL, 0);
if (continueAfter)
    parameterSize += encodeFileSpecification(0xa1, continueAfter, NULL, 0);

This seems to happen elsewhere in this file as well.