Fix migration from pre-v15 to 1.2.0 (#2460)#2465

Merged

lunny merged 1 commit intogo-gitea:release/v1.2from lafriks-fork:backport_migration_fix

Sep 5, 2017

Commits on Sep 5, 2017

Fix migration from pre-v15 to 1.2.0 (go-gitea#2460 )
lafriks
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