correctly round INT32_MAX down to page boundary

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1027 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/storage_file.c

@@ -187,6 +187,7 @@ smf_calcsize(struct smf_sc *sc, const char *size, int newfile)
 		    "  Specifiy explicit size to override.\n"
 		);
 		l = INT32_MAX;
+		l -= (l % bs);
 	}
 
 	printf("file %s size %ju bytes (%ju fs-blocks, %ju pages)\n",