|  | @@ -534,9 +534,7 @@ static void service_account_fetch_oauth2(
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				|  |  |      response_cb(metadata_req, &response);
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				|  |  |      return;
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				|  |  |    }
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				|  |  | -  body = gpr_malloc(strlen(GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX) +
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				|  |  | -                    strlen(jwt) + 1);
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				|  |  | -  sprintf(body, "%s%s", GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX, jwt);
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				|  |  | +  gpr_asprintf(&body, "%s%s", GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX, jwt);
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				|  |  |    memset(&request, 0, sizeof(grpc_httpcli_request));
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				|  |  |    request.host = GRPC_SERVICE_ACCOUNT_HOST;
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				|  |  |    request.path = GRPC_SERVICE_ACCOUNT_TOKEN_PATH;
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