main: Use stack memory for WORLD, rather than heap
main: Use stack memory for WORLD, rather than heap

There is no need to allocate this on the heap and using the stack
can simply make use of RAII.

Change-Id: Ic07cd9f74fa5484c7fa678ce7d40fac9b30aa209
Reviewed-by: Scott Parlane <85029adc3fa41ef14594a57826619713bfe95f25@alliedtelesis.co.nz>
Reviewed-by: Ridge Kennedy <c60c433c4c1ae237d133641099200771ff6f6f30@alliedtelesis.co.nz>
Signed-off-by: Matt Bennett <e3d8681cec70d3da741935b3385821001b249adc@alliedtelesis.co.nz>

alliedtelesis/buildsyspp,ATL-NZ/buildsyspp