Fix wrong error handler from compiler in js

[eljefedelrodeodeljefe]

test/fixtures/sources/c/file_2.c:3:5: error: redefinition of 'main'
int main(int argc, char const *argv[]) {
    ^
test/fixtures/sources/c/file_2.c:3:5: note: previous definition is here
int main(int argc, char const *argv[]) {
    ^
1 warning and 2 errors generated.
not ok 3 Error: compiler suffered errors
  ---
    operator: fail
    at: pt.compile (/Users/jefe/repos/platform-tools/test/async/c.spec.js:54:11)
  ...
not ok 4 Error: linker suffered errors
  ---
    operator: fail
    at: pt.link (/Users/jefe/repos/platform-tools/test/async/c.spec.js:58:13)
  ...
not ok 5 plan != count
  ---
    operator: fail
    expected: 1
    actual:   2
    at: pt.link (/Users/jefe/repos/platform-tools/test/async/c.spec.js:58:13)
  ...
path.js:7
    throw new TypeError('Path must be a string. Received ' + inspect(path));
    ^

TypeError: Path must be a string. Received undefined