small fixes.

Reference: /n/patches.lsub.org/patch/vacfsfix
Date: Wed Apr 25 16:06:18 CES 2012
Signed-off-by: nemo@lsub.org

--- /sys/src/cmd/vtvacfs/vacfs.c	Thu Apr 12 12:26:11 2012
+++ /sys/src/cmd/vtvacfs/vacfs.c	Wed Apr 25 16:05:10 2012
@@ -122,7 +122,6 @@
 {
 	char *defsrv, *srvname;
 	int p[2], fd;
-	long ncache;
 	
 	defsrv = "mmventi";
 
@@ -661,7 +660,7 @@
 	char *err;
 	int n;
 	dflag=2;
-	fmtinstall('G', fcallfmt);
+	fmtinstall('F', fcallfmt);
 
 	for(;;){
 		n = read9pmsg(mfd[0], mdata, sizeof mdata);
@@ -671,7 +670,7 @@
 			sysfatal("convM2S conversion error");
 
 		if(dflag)
-			fprint(2, "vacfs:<-%G\n", &rhdr);
+			fprint(2, "vacfs:<-%F\n", &rhdr);
 
 		thdr.data = (char*)mdata + IOHDRSZ;
 		if(!fcalls[rhdr.type])
@@ -687,7 +686,7 @@
 		}
 		thdr.tag = rhdr.tag;
 		if(dflag)
-			fprint(2, "vacfs:->%G\n", &thdr);
+			fprint(2, "vacfs:->%F\n", &thdr);
 		n = convS2Mu(&thdr, mdata, messagesize, dotu);
 		if(n <= BIT16SZ)
 			sysfatal("convS2Mu conversion error");
--- /sys/src/cmd/vtvacfs/vacfile.c	Thu Apr 12 12:26:11 2012
+++ /sys/src/cmd/vtvacfs/vacfile.c	Wed Apr 25 16:03:38 2012
@@ -1438,7 +1438,7 @@
 	if(f->dir.mode & ModeAppend)
 		offset = vtfilegetsize(f->source);
 	if (1)
-		fprint(2, "vacfilewrite%d.", i++);
+		fprint(2, "vacfilewrite%d.", i);
 	if(vtfilewrite(f->source, buf, cnt, offset) != cnt
 	|| vtfileflushbefore(f->source, offset) < 0){
 		vtfileunlock(f->source);
@@ -1787,7 +1787,6 @@
 VacFs*
 vacfsopen(VtConn *z, char *scorez, int mode, int ncache)
 {
-	int fd;
 	uchar score[VtScoreSize];
 	char *prefix;