[3.0] 12d4a11 WRK_Flush was renamed to WRW_Flush a long time ago; update some ifdefed code and comments to match

[Tollef Fog Heen]

commit 12d4a11f66a3f2ca2e3908d0fbaa776c8ef02037
Author: Tollef Fog Heen <tfheen at varnish-software.com>
Date:   Mon Oct 10 08:14:31 2011 +0200

    WRK_Flush was renamed to WRW_Flush a long time ago; update some ifdefed code and comments to match

diff --git a/bin/varnishd/cache.h b/bin/varnishd/cache.h
index 3d6982d..a00e5e1 100644
--- a/bin/varnishd/cache.h
+++ b/bin/varnishd/cache.h
@@ -260,7 +260,7 @@ struct exp {
 
 struct wrw {
 	int			*wfd;
-	unsigned		werr;	/* valid after WRK_Flush() */
+	unsigned		werr;	/* valid after WRW_Flush() */
 	struct iovec		*iov;
 	unsigned		siov;
 	unsigned		niov;
diff --git a/bin/varnishd/cache_wrw.c b/bin/varnishd/cache_wrw.c
index 61aa2e5..f25bafb 100644
--- a/bin/varnishd/cache_wrw.c
+++ b/bin/varnishd/cache_wrw.c
@@ -264,7 +264,7 @@ WRW_Sendfile(struct worker *w, int fd, off_t off, unsigned len)
 	} while (0);
 #elif defined(__linux__)
 	do {
-		if (WRK_Flush(w) == 0 &&
+		if (WRW_Flush(w) == 0 &&
 		    sendfile(*wrw->wfd, fd, &off, len) != len)
 			wrw->werr++;
 	} while (0);
@@ -293,7 +293,7 @@ WRW_Sendfile(struct worker *w, int fd, off_t off, unsigned len)
 	} while (0);
 #elif defined(__sun) && defined(HAVE_SENDFILE)
 	do {
-		if (WRK_Flush(w) == 0 &&
+		if (WRW_Flush(w) == 0 &&
 		    sendfile(*wrw->wfd, fd, &off, len) != len)
 			wrw->werr++;
 	} while (0);