ggml-cpu-aarch64: Fix compilation issues
In function 'block_q4_0x4 make_block_q4_0x4(block_q4_0*, unsigned int)',
inlined from 'int repack_q4_0_to_q4_0_4_bl(ggml_tensor*, int, const void*, size_t)' at
ggml-cpu-aarch64.cpp:3614:19: warning: writing 32 bytes into a region of size 0 [-Wstringop-overflow=]
3614 | memcpy(&out.qs[dst_offset], &elems, sizeof(uint64_t));
| ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ggml-cpu-aarch64.cpp: In function 'int repack_q4_0_to_q4_0_4_bl(ggml_tensor*, int, const void*, size_t)':
ggml-cpu-aarch64.cpp:3685:20: note: at offset 72 into destination object '<anonymous>' of size 72
3685 | *dst++ = make_block_q4_0x4(dst_tmp, interleave_block);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Dongyan Qian <dongyan0314@gmail.com>