Fix a bug in FormTrait::validate()
Fix a bug in FormTrait::validate()

stell/grav,tomzx/blog.tomrochette.com,getgrav/grav,Vivalldi/grav,tomzx/blog.tomrochette.com,getgrav/grav,Vivalldi/grav,tomzx/blog.tomrochette.com,tomzx/blog.tomrochette.com