addressed PR feedback

Author: vladima

src/compiler/core.ts

@@ -459,16 +459,18 @@ module ts {
  if (path.charCodeAt(2) === CharacterCodes.slash) return 3;
  return 2;
  }
- // Per RFC 1738'file' URI schema has a shape file://<host>/<path>
- // if <host> is omitted then it is assumed that host value is'localhost',
+ // Per RFC 1738 'file' URI schema has the shape file://<host>/<path>
+ // if <host> is omitted then it is assumed that host value is 'localhost',
  // however slash after the omitted <host> is not removed.
- // file:///folder1/file1 - this is correct URI
- // file://folder2/file2 - this is incorrect URI
+ // file:///folder1/file1 - this is a correct URI
+ // file://folder2/file2 - this is an incorrect URI
  if (path.lastIndexOf("file:///", 0) === 0) {
  return "file:///".length;
  }
  let idx = path.indexOf('://');
- if (idx !== -1) return idx + 3
+ if (idx !== -1) {
+ return idx + "://".length;
+ }
  return 0;
  }