[LayaNative 2.0]native播放音效会偶现闪退

native2.0偶现闪退，以下是闪退日志：

[code]Thread 0 Crashed:

0   libsystem_kernel.dylib        	0x00000002179170dc __pthread_kill + 8

1   libsystem_pthread.dylib       	0x0000000217990094 pthread_kill$VARIANT$mp + 380 (pthread.c:1492)

2   libsystem_c.dylib             	0x000000021786fea8 abort + 140 (abort.c:94)

3   libsystem_malloc.dylib        	0x000000021796a684 malloc_vreport + 564 (malloc_printf.c:183)

4   libsystem_malloc.dylib        	0x000000021796a8ac malloc_zone_error + 100 (malloc_printf.c:209)

5   libsystem_malloc.dylib        	0x0000000217958990 free_list_checksum_botch + 36 (magazine_inline.h:192)

6   libsystem_malloc.dylib        	0x0000000217955e54 small_free_list_remove_ptr_no_clear + 1232 (magazine_small.c:102)

7   libsystem_malloc.dylib        	0x0000000217956c84 free_small + 564 (magazine_small.c:1245)

8   OpenAL                        	0x000000022e93f0b8 OALBuffer::~OALBuffer() + 60 (new:272)

9   OpenAL                        	0x000000022e94b30c alDeleteBuffers + 660 (oalImp.cpp:1450)

10  layabox                       	0x0000000100fb0a68 laya::JCAudioWavPlayer::checkWavePlayEnd() + 108

11  layabox                       	0x0000000101059f98 laya::JCScriptRuntime::onUpdate() + 368

12  layabox                       	0x0000000101000b58 laya::JCConchRender::renderFrame(long, bool) + 468

[/code]