Avoid compiler warnings.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3879 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/lackey/lk_main.c b/lackey/lk_main.c
index f63551a..af5f5aa 100644
--- a/lackey/lk_main.c
+++ b/lackey/lk_main.c
@@ -41,6 +41,7 @@
 static ULong n_Jccs         = 0;
 static ULong n_Jccs_untaken = 0;
 
+__attribute__((unused))
 static void add_one_dlrr_call(void)
 {
    n_dlrr_calls++;
@@ -54,11 +55,13 @@
    n_guest_instrs++;
 }
 
+__attribute__((unused))
 static void add_one_UInstr(void)
 {
    n_UInstrs++;
 }
 
+__attribute__((unused))
 static void add_one_guest_instr(void)
 {
    n_guest_instrs++;