'bbcmd' with no args segfaults

**Describe the bug**
`bbcmd` with no args segfaults

**To Reproduce**
```
$ bbcmd
Segmentation fault
```

**Expected behavior**
It should print the help screen

**Screenshots**

**Environment (please complete the following information):**
```
$ rpm -q --whatprovides `which bbcmd`
ibm-burstbuffer-1.7.2-3094.ppc64le
```
**Additional context**

**Issue Source:**
