glue_back_response can return without a value (ITS#2474)

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B. Furuseth
Version: HEAD
OS: 
URL: 
Submission from: (NULL) (129.240.186.42)


slapd/backglue.c:glue_back_response() can reach the end of the
function without returning a value.