Escape character after a label causes the next label with quotes to not have a name

[rcjsuen]

ENV a=b\
 "c"="d"

const library = require("dockerfile-ast");
const dockerfile = library.DockerfileParser.parse("ENV a=b\\\n \"c\"=\"d\"");
const properties = dockerfile.getInstructions()[0].getProperties();
console.log(`${properties[0].getName()}-${properties[0].getValue()}`);
console.log(`${properties[1].getName()}-${properties[1].getValue()}`);

a-b
-d