fix memory leaking in test_env_mat_a_mix.cc#2596

wanghan-iapcm merged 3 commits into

deepmodeling:develdeepmodeling/deepmd-kit:develfrom

njzjz:fix-memory-leaking-in-test_env_mat_a_mix.ccnjzjz/deepmd-kit:fix-memory-leaking-in-test_env_mat_a_mix.ccCopy head branch name to clipboard