Fix one more assert that I missed in ImportOrderer.
@@ -291,7 +291,7 @@ public class ImportOrderer {
// At the start of each iteration of this loop, i points to an identifier.
// On exit from the loop, i points to a token after an identifier or after *.
while (true) {
- assert isIdentifierToken(i);
+ Preconditions.checkState(isIdentifierToken(i));
imported.append(tokenAt(i));
i++;
if (!tokenAt(i).equals(".")) {
