fix clang warning about dead stores

clang 'scan-build':
Value stored to 'r' is never read
Value stored to 'fd' is never read

src/ngircd/irc-channel.c

@@ -526,6 +526,8 @@ IRC_TOPIC( CLIENT *Client, REQUEST *Req )
 					       Client_ID(Client),
 					       Channel_Name(chan), topic);
 #ifndef STRICT_RFC
+			if (!r)
+				return r;
 			r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG,
 					       Client_ID(Client),
 					       Channel_Name(chan),

src/ngircd/ngircd.c

@@ -706,10 +706,8 @@ NGIRCd_Init( bool NGIRCd_NoDaemon )
 
 		/* Detach stdin, stdout and stderr */
 		Setup_FDStreams(fd);
-		if (fd > 2) {
+		if (fd > 2)
 			close(fd);
-			fd = -1;
-		}
 	}
 	pid = getpid();