Reported by Oracle Parfait:
Error: Memory leak
   Memory leak [memory-leak] (CWE 401):
      Memory leak of pointer authdata allocated with malloc((authdatalen - 1))
        at line 1955 of process.c in function 'do_generate'.
          authdata allocated at line 1946 with malloc((authdatalen - 1))
      Memory leak of pointer authdata allocated with malloc((authdatalen - 1))
        at line 1971 of process.c in function 'do_generate'.
          authdata allocated at line 1946 with malloc((authdatalen - 1))
          authdata leaks when (i + 1) >= argc at line 1910.
        at line 1980 of process.c in function 'do_generate'.
          authdata allocated at line 1946 with malloc((authdatalen - 1))
          authdata leaks when (i + 1) >= argc at line 1910.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>