Bug 23712

/usr/src/usr.sbin/pw/Makefile includes the uninitialized variable CDB into CFLAGS:

#RND=   -DUSE_MD5RAND
CFLAGS+= -W -Wall $(CDB) $(RND)

This will lead to problems when the user invoking make (e.g. on ´make world´)
has set this particular variable in his environment. It should be set to a
reasonable default (empty: "") or be dropped altogether.

On a related note, the assignment to RND in the same Makefile is commented out.
To avoid the same problem as mentioned above with CDB it should at least
be set to "".

Fix: 

Two possible solutions for CDB:
1) Drop it from the Makefile
2) Set it to ""

For RND:
Set to "".
How-To-Repeat: Enter /usr/src/usr.sbin/pw, set CDB or RND to some arbitrary value, invoke make.