Sample test failed on arm64

[lindeer]

checkout master@4b7e245, this is the first commit causing the error.

$ make test
Running tests...
Test project /home/wesley/Work/projects/chatgpt/llama.cpp/build
    Start 1: test-quantize-fns
1/4 Test #1: test-quantize-fns ................   Passed    0.01 sec
    Start 2: test-quantize-perf
2/4 Test #2: test-quantize-perf ...............   Passed    0.01 sec
    Start 3: test-sampling
3/4 Test #3: test-sampling ....................Child aborted***Exception:   0.05 sec
    Start 4: test-tokenizer-0
4/4 Test #4: test-tokenizer-0 .................   Passed    0.03 sec

75% tests passed, 1 tests failed out of 4

Total Test time (real) =   0.10 sec

The following tests FAILED:
	  3 - test-sampling (Child aborted)
Errors while running CTest

assert(candidates_p.size == expected_probs.size()); assertion failed, expect 1 but candidates_p.size is 5.