[ticket/12964] Correct use of undefined $row variable.

PHPBB3-12964
Merge pull request #2866 from bantu/ticket/12964

[ticket/12964] Correct use of undefined $row variable.
Merge branch 'develop-ascraeus' into develop

# By Andreas Fischer
# Via Andreas Fischer (1) and Dhruv Goel (1)
* develop-ascraeus:
  [ticket/12964] Correct use of undefined $row variable.