fix wd struct alignment issue
fix wd struct alignment issue

dimagol/trex-core,kisel/trex-core,dimagol/trex-core,kisel/trex-core,kisel/trex-core,dimagol/trex-core,kisel/trex-core,dimagol/trex-core,dimagol/trex-core,kisel/trex-core,dimagol/trex-core,kisel/trex-core