Fix memory leak. (#54)
Fix memory leak. (#54)

Signed-off-by: John Plevyak <21e8c5cc24c747cac934fcbef39d1b757b61996c@gmail.com>

proxy-wasm/proxy-wasm-cpp-sdk,proxy-wasm/proxy-wasm-cpp-sdk,proxy-wasm/proxy-wasm-cpp-sdk,proxy-wasm/proxy-wasm-cpp-sdk