demmt: fix off-by-one in load_data logic
demmt: fix off-by-one in load_data logic

MoochMcGee/envytools,karolherbst/envytools,kfractal/envytools,hakzsam/envytools,MoochMcGee/envytools,karolherbst/envytools,grate-driver/envytools,hakzsam/envytools,kfractal/envytools,karolherbst/envytools,envytools/envytools,pierremoreau/envytools,MoochMcGee/envytools,karolherbst/envytools,MoochMcGee/envytools,pierremoreau/envytools,kfractal/envytools,envytools/envytools,MoochMcGee/envytools,envytools/envytools,pierremoreau/envytools,hakzsam/envytools,grate-driver/envytools,envytools/envytools,envytools/envytools,grate-driver/envytools,kfractal/envytools,kfractal/envytools,grate-driver/envytools,pierremoreau/envytools,pierremoreau/envytools,hakzsam/envytools,hakzsam/envytools,grate-driver/envytools,karolherbst/envytools