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-rw-r--r--src/node_crypto_bio.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/node_crypto_bio.cc b/src/node_crypto_bio.cc
index ab68c0a081..baa90204f2 100644
--- a/src/node_crypto_bio.cc
+++ b/src/node_crypto_bio.cc
@@ -247,6 +247,8 @@ const BIO_METHOD* NodeBIO::GetMethod() {
return &method;
#else
+ // This is called from InitCryptoOnce() to avoid race conditions during
+ // initialization.
static BIO_METHOD* method = nullptr;
if (method == nullptr) {