Optional argument nc can not be accessed if it is not present.

Author Bruno Mundim <bmundim@p7n01.(none)>
Author date 2017-01-02 20:55:06
Author local date 2017-01-02 15:55:06 -0500
Committer Bruno Mundim <bmundim@p7n01.(none)>
Committer date 2017-01-02 20:55:06
Committer local date 2017-01-02 15:55:06 -0500
Commit b80c8a7384d3c723a93cca29693fabe375c6cb24
Tree 71260ee06b662eafcd0d25aabcfbf9f33f49f326
Parent f1df57773769b1cb7c5200e549e772e38afbc906
Optional argument nc can not be accessed if it is not present.

 * Fixes a segfault at runtime with XL compilers.
Affected files:
src/ext/lclist.f90
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