The Simulation of the Memory Allocation should correctly handle next available address

[tesonep]

When a chunk of memory is requested in the simulation (using the simulated malloc, calloc, etc) if the actual position of the memory is not equal to the desired position, the recording of the next available address is not correctly updated.

In SlangMemoryManager >> #allocate:desiredPosition: nextAvailable address should be updated as:

nextAvailableAddress := allocatedAddress + allocatedSize.

The issue can be reproduced by doing:

[
	HFAllocationEvent {
		#id : 77,
		#objectType : #array,
		#objectSize : 100000,
		#isNew : true,
		#isRoot : true
	},
	HFAllocationEvent {
		#id : 79,
		#objectType : #array,
		#objectSize : 100000,
		#isNew : false,
		#isRoot : true
	},
	HFOldSpaceCollectionEvent { },
	HFAllocationEvent {
		#id : 85,
		#objectType : #array,
		#objectSize : 100000,
		#isNew : false,
		#isRoot : true
	},
	HFOldSpaceCollectionEvent { }
]