PR_AtomicDecrement(&g_InstanceCount);
nsUNIXCharset::~nsUNIXCharset(){  PR_AtomicDecrement(&g_InstanceCount);  PR_AtomicDecrement(&gCnt);  if(0 == gCnt) {     if (gNLInfo) {        delete gNLInfo;        gNLInfo = nsnull;     }     if (gInfo_deprecated) {        delete gInfo_deprecated;        gInfo_deprecated = nsnull;     }  }}