Purpose: Makes the RETR_STAT operation in timehash a little bit more
efficient.

Reasoning: I stumbled on a large number of open-close sequences when trying
to find the performance problem with XOVER. It turned out that this wasn't
the reason (the culprit seems to be history lookups) but I left the patch
in, since it is simple and clean.

Patch against: snapshot 19980623, also tested on snapshot 19980719

--- inn-980623/storage/timehash/timehash.c.orig	Thu Jun 18 19:13:10 1998
+++ inn-980623/storage/timehash/timehash.c	Mon Jul 13 09:55:41 1998
@@ -176,6 +176,19 @@
     struct stat         sb;
     ARTHANDLE           *art;
 
+    if (amount == RETR_STAT) {
+        if (access(path, R_OK) < 0) {
+            SMseterror(SMERR_UNDEFINED, NULL);
+            return NULL;
+        }
+        art = NEW(ARTHANDLE, 1);
+        art->type = TOKEN_TIMEHASH;
+	art->data = NULL;
+	art->len = 0;
+	art->private = NULL;
+	return art;
+    }
+        
     if ((fd = open(path, O_RDONLY)) < 0) {
 	SMseterror(SMERR_UNDEFINED, NULL);
 	return NULL;
@@ -183,14 +196,6 @@
 
     art = NEW(ARTHANDLE, 1);
     art->type = TOKEN_TIMEHASH;
-
-    if (amount == RETR_STAT) {
-	art->data = NULL;
-	art->len = 0;
-	art->private = NULL;
-	close(fd);
-	return art;
-    }
 
     if (fstat(fd, &sb) < 0) {
 	SMseterror(SMERR_UNDEFINED, NULL);