fix bug causing audio to be cut off too short

examples/remote.json5

@@ -1,6 +1,7 @@
 {
   outPath: './remote.mp4',
   allowRemoteRequests: true,
+  audioFilePath: './assets/High [NCS Release] - JPB  (No Copyright Music)-R8ZRCXy5vhA.m4a',
   clips: [
     { layers: [{ type: 'image', path: 'https://picsum.photos/400/400' }] },
     { layers: [{ type: 'image', path: 'https://picsum.photos/200/400' }] },

index.js

@@ -542,9 +542,10 @@ module.exports = async (config = {}) => {
     } // End while loop
 
     outProcess.stdin.end();
-  } finally {
+  } catch (err) {
     outProcess.kill();
-
+    throw err;
+  } finally {
     if (verbose) console.log('Cleanup');
     if (frameSource1) await frameSource1.close();
     if (frameSource2) await frameSource2.close();