updates from plan 9

src/lib9p/_post.c

@@ -33,8 +33,8 @@ _post2(void *v)
 	Srv *s;
 
 	s = v;
-	rfork(RFNOTEG);
 	if(!s->leavefdsopen){
+		rfork(RFNOTEG);
 		rendezvous((ulong)s, 0);
 		close(s->srvfd);
 	}

src/lib9p/fid.c

@@ -46,6 +46,7 @@ allocfid(Fidpool *pool, ulong fid)
 	incfidref(f);
 	incfidref(f);
 	if(caninsertkey(pool->map, fid, f) == 0){
+		closefid(f);
 		closefid(f);
 		return nil;
 	}

src/lib9p/portdate

@@ -0,0 +1,13 @@
+_post.c	2004/1225
+dirread.c	2004/1225
+fid.c		2004/1225
+file.c		2004/1225
+intmap.c	2004/1225
+mem.c	2004/1225
+req.c		2004/1225
+parse.c	2004/1225
+post.c	2004/1225
+srv.c		2004/1225
+tpost.c	2004/1225
+uid.c		2004/1225
+util.c		2004/1225

src/lib9p/req.c

@@ -48,6 +48,7 @@ allocreq(Reqpool *pool, ulong tag)
 	increqref(r);
 	increqref(r);
 	if(caninsertkey(pool->map, tag, r) == 0){
+		closereq(r);
 		closereq(r);
 		return nil;
 	}