Fix another instance of the optional argument bug that wasn't caught before.

Author Bruno Mundim <bmundim@scinet.utoronto.ca>
Author date 2017-01-23 17:03:41
Author local date 2017-01-23 12:03:41 -0500
Committer Bruno Mundim <bmundim@scinet.utoronto.ca>
Committer date 2017-01-23 17:03:41
Committer local date 2017-01-23 12:03:41 -0500
Commit 45cae2ab930729ac4821fd8cd5acd3f17d1c1afe
Tree 60a906952f9b930f786e43107171995ca2bbac56
Parent 8fbb55ded8867d652d3c6f5b7c64fcc001dbf581
Fix another instance of the optional argument bug that wasn't caught before.
Affected files:
src/ext/lclist.f90
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