Fix typo in previous commit (slapi_dn.c -> slapi_dn.lo)

servers/slapd/slapi/Makefile.in

@@ -26,7 +26,7 @@ LIB_DEFS = -DSLAPI_LIBRARY
 
 SRCS=  plugin.c slapi_pblock.c slapi_utils.c printmsg.c slapi_ops.c slapi_dn.c slapi_ext.c slapi_overlay.c \
 	$(@PLAT@_SRCS)
-OBJS=  plugin.lo slapi_pblock.lo slapi_utils.lo printmsg.lo slapi_ops.lo slapi_dn.c slapi_ext.lo slapi_overlay.lo \
+OBJS=  plugin.lo slapi_pblock.lo slapi_utils.lo printmsg.lo slapi_ops.lo slapi_dn.lo slapi_ext.lo slapi_overlay.lo \
 	$(@PLAT@_SRCS)
 
 XSRCS= version.c