GafferOSL::OSLShader : Fix Maya compilation, small optimization in initializing array defaults
GafferOSL::OSLShader : Fix Maya compilation, small optimization in initializing array defaults

ImageEngine/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,chippey/gaffer,hradec/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,ImageEngine/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,chippey/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,boberfly/gaffer,andrewkaufman/gaffer,chippey/gaffer,lucienfostier/gaffer,boberfly/gaffer,andrewkaufman/gaffer,boberfly/gaffer,andrewkaufman/gaffer,hradec/gaffer,chippey/gaffer,hradec/gaffer,GafferHQ/gaffer,ivanimanishi/gaffer,appleseedhq/gaffer,hradec/gaffer,ivanimanishi/gaffer,boberfly/gaffer,andrewkaufman/gaffer,hradec/gaffer,appleseedhq/gaffer