dconschat: Increase WARNS to 2

Follow the existing pattern of fflush() in verbose mode.

PR:		71665
Sponsored by:	The FreeBSD Foundation

usr.sbin/dconschat/Makefile

@@ -5,6 +5,6 @@ CFLAGS+= -I${SRCTOP}/sys
 
 LIBADD=	kvm
 
-WARNS?=	1
+WARNS?=	2
 
 .include <bsd.prog.mk>

usr.sbin/dconschat/dconschat.c

@@ -519,8 +519,10 @@ ok:
 		rlen = len;
 
 #if 1
-	if (verbose == 1)
-		printf("[%d]", rlen); fflush(stdout);
+	if (verbose == 1) {
+		printf("[%d]", rlen);
+		fflush(stdout);
+	}
 #endif
 
 again: