forsyth: 8l: cleanup of asmb

Reference: /n/atom/patch/applied/8lasmbclean
Date: Sun Aug 16 04:18:06 CES 2015
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/8l/asm.c	Sun Aug 16 04:17:57 2015
+++ /sys/src/cmd/8l/asm.c	Sun Aug 16 04:17:58 2015
@@ -112,9 +112,9 @@
 		}
 		curp = p;
 		asmins(p);
-		if(cbc < sizeof(and))
-			cflush();
 		a = (andptr - and);
+		if(cbc < a)
+			cflush();
 		if(debug['a']) {
 			Bprint(&bso, pcstr, pc);
 			for(op1 = and; op1 < andptr; op1++)