[Bug 38847] valgrind shows a definite leak in winmm/tests/wave.c

https://bugs.winehq.org/show_bug.cgi?id=38847

--- Comment #1 from Austin English  ---
Also:
==7171== 44,101 bytes in 1 blocks are possibly lost in loss record 757 of 758
==7171==    at 0x7BC4AAA3: notify_alloc (heap.c:254)
==7171==    by 0x7BC4ED46: RtlAllocateHeap (heap.c:1715)
==7171==    by 0x4B15985: test_fragmentsize (wave.c:1565)
==7171==    by 0x4B16353: func_wave (wave.c:1696)
==7171==    by 0x4B170C1: run_test (test.h:584)
==7171==    by 0x4B17509: main (test.h:666)
==7171==