only read first 4 bytes to check if a file is a wasm binary (#894)
only read first 4 bytes to check if a file is a wasm binary (#894)


WebAssembly/binaryen,yurydelendik/binaryen,WebAssembly/binaryen,yurydelendik/binaryen,yurydelendik/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,yurydelendik/binaryen,yurydelendik/binaryen,WebAssembly/binaryen