style: fix functions definitions

This is to fix old style functions definitions.

Change-Id: I094b1497dcf948d4d8de4d57d93878aa092ea053
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/lib/zlib/inflate.c b/lib/zlib/inflate.c
index 8acbef4..aa25e61 100644
--- a/lib/zlib/inflate.c
+++ b/lib/zlib/inflate.c
@@ -342,7 +342,7 @@
 
     a.out > inffixed.h
  */
-void makefixed()
+void makefixed(void)
 {
     unsigned low, size;
     struct inflate_state state;