MockMediaEndpoint is crashing regularly in MockMediaEndpoint::generateDtlsInfo while running tests.
<rdar://problem/29149588>
Reproducible with: run-webkit-tests -1 --guard-malloc imported/w3c/web-platform-tests/webrtc/rtcpeerconnection --repeat 10 -v --additional-env-var=JSC_slowPathAllocsBetweenGCs=10
Created attachment 296313 [details] Patch
Committed r209416: <http://trac.webkit.org/changeset/209416>