crypto: check return code from EVP_DigestUpdate

Coverity was complaining that we did not check the
return code. We seem to check in the other place it
is called and the method already handles returning
a result.

Signed-off-by: Michael Dawson <mdawson@devrus.com>

PR-URL: #41800
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>

Author: mhdawson

src/crypto/crypto_hash.cc

@@ -122,8 +122,7 @@ bool Hash::HashInit(const EVP_MD* md, Maybe<unsigned int> xof_md_len) {
 bool Hash::HashUpdate(const char* data, size_t len) {
   if (!mdctx_)
     return false;
-  EVP_DigestUpdate(mdctx_.get(), data, len);
-  return true;
+  return EVP_DigestUpdate(mdctx_.get(), data, len) == 1;
 }
 
 void Hash::HashUpdate(const FunctionCallbackInfo<Value>& args) {