Force 8-byte alignment macOS issue

[seiftnesse]

[ RUN ] CustomAllocTest.AlignmentTest
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 1 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 3 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 7 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 15 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 17 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 31 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 33 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 63 not aligned properly
/Users/runner/work/memoryallocator/memoryallocator/tests/test_allocator.cpp:586: Failure
Expected equality of these values:
addr % 8
Which is: 4
0
Allocation of size 65 not aligned properly