Investigate why chain stop with not gratefully.

[taobun]

It seems to be a problem on wasmer runtime when request data and close chain after process request. Chain crash

This is error log

Got another SIGINT before trap is triggered on WebAssembly side, aborting
SIGABRT: abort
PC=0x7fff6972733a m=0 sigcode=0
goroutine 0 [idle]:
runtime.pthread_cond_wait(0x5f6fe68, 0x5f6fe28, 0x7ffe00000000)
	/usr/local/go/src/runtime/sys_darwin.go:390 +0x39
runtime.semasleep(0xffffffffffffffff, 0x7ffeefbff5e0)
	/usr/local/go/src/runtime/os_darwin.go:63 +0x85
runtime.notesleep(0x5f6fc28)
	/usr/local/go/src/runtime/lock_sema.go:173 +0xe0
runtime.stoplockedm()
	/usr/local/go/src/runtime/proc.go:1977 +0x88
runtime.schedule()
	/usr/local/go/src/runtime/proc.go:2460 +0x4a6
runtime.park_m(0xc000c79c80)
	/usr/local/go/src/runtime/proc.go:2696 +0x9d
runtime.mcall(0x4067486)
	/usr/local/go/src/runtime/asm_amd64.s:318 +0x5b