[acc] workaround for compiling issue

Related to 0ff8256
We need to review this logic (of static_detector) as it looks to be broken as it is now.

(cherry picked from commit 6c0b37f)

modules/acc/acc_extra.c

@@ -87,7 +87,7 @@ void init_acc_extra(void)
 	/* ugly trick to get the address of the static buffer */
 	static_detector[0] = int2str( (unsigned long)3, &i) + i;
 	/* remember directly the static buffer returned by ip_addr2a()*/
-	static_detector[1] = _ip_addr_A_buff;
+	static_detector[1] = _ip_addr_A_buffs[0];
 }