erlc: fix typo in update_erlcinfo/3 clause
Merge pull request #289 from tuncer/semicolon-vs-comma

erlc: fix typo in update_erlcinfo/3 clause
erlc: replace if expression with case of

Motivated by the bug fix in 2c4d7d1.
Merge pull request #290 from tuncer/erlc-case-of

erlc: replace if expression with case of