[PATCH] Spell __attribute__ correctly in cache.h.

Sun's cc doesn't know __attribute__.
Signed-off-by: NJason Riedy <ejr@cs.berkeley.edu>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

cache.h

@@ -41,7 +41,7 @@
 #endif
 
 #ifndef __attribute__
-#define __attribute(x)
+#define __attribute__(x)
 #endif
 
 /*