message: Fluid-Build: Also fix leafTask.ts
diff: @@ -63,7 +63,7 @@ export abstract class LeafTask extends Task {
  }
  const ret = await execAsync(this.command, {
  cwd: this.node.pkg.directory,
  - env: { path: process.env["PATH"] + ";" + path.join(this.node.pkg.directory, "node_modules", ".bin") }
  + env: { PATH: `${process.env["PATH"]}${path.delimiter}${path.join(this.node.pkg.directory, "node_modules", ".bin")}` }
  });
  if (ret.error) {
  