[master] Delete trailing whitespace from ChangeLog

ChangeLog

@@ -13,7 +13,7 @@
 	In addition, its log messages now use two suffixes, DCTL_ for logs the
 	emanate from the underlying base classes, and DHCP_DDNS_ for logs which
 	emanate from DHCP-DDNS specific code
-	(Trac #2978, git 5aec5fb20b0486574226f89bd877267cb9116921) 
+	(Trac #2978, git 5aec5fb20b0486574226f89bd877267cb9116921)
 
 626.	[func]		tmark
 	Created the initial implementation of DHCP-DDNS service