minor formatting diff with sources

Reference: /n/atom/patch/applied2013/nit5c
Date: Tue Jun 18 20:39:12 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/5c/txt.c	Tue Jun 18 20:39:12 2013
+++ /sys/src/cmd/5c/txt.c	Tue Jun 18 20:39:12 2013
@@ -1061,8 +1061,8 @@
 		nextpc();
 		p->as = a;
 		naddr(f1, &p->from);
-		if(a == ACMP && f1->op == OCONST && p->from.offset < 0)
-		if(p->from.offset != 0x80000000) {
+		if(a == ACMP && f1->op == OCONST && p->from.offset < 0 &&
+		    p->from.offset != 0x80000000) {
 			p->as = ACMN;
 			p->from.offset = -p->from.offset;
 		}