Remove destination folder if mpm fails

Author: Sam Eagen

src/mpm.ts

@@ -2,6 +2,7 @@
 
 import * as exec from "@actions/exec";
 import * as tc from "@actions/tool-cache";
+import {rmRF} from "@actions/io";
 import * as path from "path";
 import * as matlab from "./matlab";
 import properties from "./properties.json";
@@ -68,6 +69,9 @@ export async function install(mpmPath: string, release: matlab.Release, products
 
     const exitCode = await exec.exec(mpmPath, mpmArguments);
     if (exitCode !== 0) {
+        // Fully remove failed MATLAB installation for self-hosted runners
+        await rmRF(destination);
+
         return Promise.reject(Error(`Script exited with non-zero code ${exitCode}`));
     }
     return