Fix a copy'n paste error spotted by Julian.


git-svn-id: svn://svn.valgrind.org/vex/trunk@2374 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/pub/libvex_ir.h b/pub/libvex_ir.h
index 0f82703..22fed08 100644
--- a/pub/libvex_ir.h
+++ b/pub/libvex_ir.h
@@ -1487,8 +1487,8 @@
 
 /* ------------------ Expressions ------------------ */
 
-typedef struct _IRQop IRQop;   /* forward declaration */
-typedef struct _IRQop IRTriop; /* forward declaration */
+typedef struct _IRQop   IRQop;   /* forward declaration */
+typedef struct _IRTriop IRTriop; /* forward declaration */
 
 
 /* The different kinds of expressions.  Their meaning is explained below