Remove redundant message in AddUserToTokenDacl().

GetTokenUser() will have reported an adequate error message.  These
error conditions almost can't happen, so users are unlikely to observe
this change.

Reviewed by Tom Lane and Stephen Frost.

src/common/exec.c

@@ -674,10 +674,7 @@ AddUserToTokenDacl(HANDLE hToken)
 
 	/* Get the current user SID */
 	if (!GetTokenUser(hToken, &pTokenUser))
-	{
-		log_error("could not get token user: error code %lu", GetLastError());
-		goto cleanup;
-	}
+		goto cleanup;			/* callee printed a message */
 
 	/* Figure out the size of the new ACL */
 	dwNewAclSize = asi.AclBytesInUse + sizeof(ACCESS_ALLOWED_ACE) +