optmize header search

@@ -33,21 +33,17 @@ inline
 int
 comp(const void * _a, const void * _b)
 {
-	HttpHeader a = (HttpHeader)_a;
-	HttpHeader b = (HttpHeader)_b;
-	return (a->hash < b->hash)? -1 : (a->hash > b->hash)? 1 : 0;
+	const unsigned long * a = _a;
+	HttpHeader            b = (HttpHeader)_b;
+	return (*a < b->hash)? -1 : (*a > b->hash)? 1 : 0;
 }
 
 HttpHeader
 httpHeaderGet(const HttpHeader * root, const char * name, size_t nname)
 {
-	struct c_HttpHeader search = {
-		sdbm((const unsigned char*)name, nname),
-		NULL,
-		{},
-		0};
+	unsigned long hash = sdbm((const unsigned char*)name, nname);
 
-	HttpHeader * found  = tfind(&search, (void**)root, comp);
+	HttpHeader * found  = tfind(&hash, (void**)root, comp);
 
 	return (NULL != found)? *found : NULL;
 }