klocwork analysis finding: memory leak

Problem Description:
44 int parse_cmd_options(int argc, char **argv) {
45 po::options_description desc{"Options"};
46 desc.add_options()
47 ("help", "Convolution Options:")
48 ("mb,n", po::value(&mb), "Batch size")

klocwork report: Memory leak. Dynamic memory stored in 'po::value ( &sw)' allocated through function 'value' at line 48 is lost at line 46

The boost version we used is 1.69
Any comments for this issue?