Wrong lloc count

[marco-c]

void XPCJSRuntime::CustomGCCallback(JSGCStatus status) {
  nsTArray<xpcGCCallback> callbacks(extraGCCallbacks.Clone());
  for (uint32_t i = 0; i < callbacks.Length(); ++i) {
    callbacks[i](status);
  }
}

lloc for this snippet is 1.0.

[marco-c]

Before #611 it was 2, after #611 it was 1, after #616 it is 2 again. There must be some intermittency in the grammar generation.