cl.getCommandQueueInfo crashes occasionally #40
Description
The following test case crashes reliably after a few iterations.
var cl = require('node-opencl');
var platforms = cl.getPlatformIDs();
var ctx = cl.createContextFromType([cl.CONTEXT_PLATFORM, platforms[0]], cl.DEVICE_TYPE_ALL, null, null);
var device = cl.getContextInfo(ctx, cl.CONTEXT_DEVICES)[0];
var q = cl.createCommandQueue(ctx, device, cl.QUEUE_PROFILING_ENABLE);
for (var n = 0; n < 1000; ++n) {
var ctx2 = cl.getCommandQueueInfo(q, cl.QUEUE_CONTEXT);
}