zero init with bad random

quic/core/crypto/quic_random.cc

diff --git a/quic/core/crypto/quic_random.cc b/quic/core/crypto/quic_random.cc
index 56657b5..21a3b30 100644
--- a/quic/core/crypto/quic_random.cc
+++ b/quic/core/crypto/quic_random.cc
@@ -24,7 +24,7 @@
 }
 
 uint64_t Xoshiro256PlusPlus() {
-  static thread_local uint64_t rng_state[4];
+  static thread_local uint64_t rng_state[4] = {0,0,0,0};
   static thread_local bool rng_state_initialized = false;
   if (QUIC_PREDICT_FALSE(!rng_state_initialized)) {
     RAND_bytes(reinterpret_cast<uint8_t*>(&rng_state), sizeof(rng_state));