make code C89-compilable again

reactos/ntoskrnl/cc

diff -u -r1.10 -r1.11
--- cacheman.c	15 Aug 2004 16:38:59 -0000	1.10
+++ cacheman.c	21 Aug 2004 13:21:44 -0000	1.11
@@ -49,9 +49,10 @@

     IN BOOLEAN BcbListHeld
     )
 {

+	LARGE_INTEGER i; 
+

 	UNIMPLEMENTED;
 

-	LARGE_INTEGER i; 

 	i.QuadPart = 0;
 	return i;
 }