branch-3.0:[fix](mow) fix potential mem leak for DeleteBitmap::get_agg (#52718, #52756)#52931

dataroaring merged 2 commits intoapache:branch-3.0apache/doris:branch-3.0from

zhannngchen:cp-52718-3.0zhannngchen/incubator-doris:cp-52718-3.0Copy head branch name to clipboard