7c969e1c ntdll!RtlFreeHeapSlowly+0x00000037
        7c947553 ntdll!RtlFreeHeap+0x000000f9
        3e90dc82 mshtml!CButton::`scalar deleting destructor'+0x0000002f
        3e600619 mshtml!CBase::SubRelease+0x00000022
        3e5de1ad mshtml!CElement::PrivateRelease+0x00000029
        3e5da3d6 mshtml!PlainRelease+0x00000025
        3e5f6c4c mshtml!PlainTrackerRelease+0x00000014
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\WINDOWS\system32\jscript.dll -
        633a10b4 jscript!DllGetClassObject+0x00009efc
        6339fb4a jscript!DllGetClassObject+0x00008992
        6339fd33 jscript!DllGetClassObject+0x00008b7b
        63405594 jscript!DllRegisterServer+0x0000c163
        633a92f7 jscript!DllGetClassObject+0x0001213f
        633a6650 jscript!DllGetClassObject+0x0000f498
        633a9c0b jscript!DllGetClassObject+0x00012a53
        633a5ab0 jscript!DllGetClassObject+0x0000e8f8
        633a59f7 jscript!DllGetClassObject+0x0000e83f

PlainRelease

PlainTrackerRelease

由CollectGarbage()引发的js垃圾回收