Fix regex cache initialization order

ober

a7102f4d1b50edcd27b556a6e4a4f2d3c7a1ab5c

diff --git a/lib/jerboa-awk/runtime.sls b/lib/jerboa-awk/runtime.sls
index c10d511..255411c 100644
--- a/lib/jerboa-awk/runtime.sls
+++ b/lib/jerboa-awk/runtime.sls
@@ -71,11 +71,11 @@
 
   ;;; ---- Regex pattern cache ----
 
-  (define *regex-cache* (make-regex-cache))
-
   (define (make-regex-cache)
     (make-hashtable equal-hash equal?))
 
+  (define *regex-cache* (make-regex-cache))
+
   (define (regex-cache-lookup cache pattern)
     (let ((cached (hashtable-ref cache pattern #f)))
       (if cached