changed orientation of bind_assoc rule

--- a/src/HOLCF/Fixrec.thy	Tue Jul 12 18:28:36 2005 +0200
+++ b/src/HOLCF/Fixrec.thy	Tue Jul 12 18:44:32 2005 +0200
@@ -73,7 +73,7 @@
 by (rule_tac p=m in maybeE, simp_all)
 
 lemma bind_assoc [simp]:
- "(do a <- m; b <- k\<cdot>a; h\<cdot>b) = (do b <- (do a <- m; k\<cdot>a); h\<cdot>b)"
+ "(do b <- (do a <- m; k\<cdot>a); h\<cdot>b) = (do a <- m; b <- k\<cdot>a; h\<cdot>b)"
 by (rule_tac p=m in maybeE, simp_all)
 
 subsection {* Run operator *}