[hackers] [libzahl] Fix warnings || Mattias Andrée

[git]

commit 7f8de37dc60b0b4b7ce1ecf94331f84b084b9eb7
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Thu Apr 28 22:12:25 2016 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Thu Apr 28 22:12:25 2016 +0200

    Fix warnings
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/bench/benchmark-func.c b/bench/benchmark-func.c
index 3427993..dd68515 100644
--- a/bench/benchmark-func.c
+++ b/bench/benchmark-func.c
@@ -106,12 +106,12 @@ gettime(size_t m)
                        PREINSTRUCTION;\
                        k = f->measurements;\
                        while (k--) {\
-                               INSTRUCTION;\
-                               INSTRUCTION;\
+                               (void)INSTRUCTION;\
+                               (void)INSTRUCTION;\
                                j = f->runs;\
                                TIC;\
                                while (j--) {\
-                                       INSTRUCTION;\
+                                       (void)INSTRUCTION;\
                                }\
                                TOC;\
                                measurements[k] = TICKS;\