sessionctx/variable: fix panic when set variable=''#9533
Merged
xiekeyi98 merged 2 commits intopingcap:masterfrom Mar 4, 2019
Merged
sessionctx/variable: fix panic when set variable=''#9533xiekeyi98 merged 2 commits intopingcap:masterfrom
xiekeyi98 merged 2 commits intopingcap:masterfrom