tools_common.h: fix usage_exit() prototype
+ the definitions in the examples
silences a missing-prototype warning
Change-Id: I7c064cacd6d2073a6107de6c3e2cc46ef8a68411
diff --git a/examples/vp8cx_set_ref.c b/examples/vp8cx_set_ref.c
index a298282..8b4cc30 100644
--- a/examples/vp8cx_set_ref.c
+++ b/examples/vp8cx_set_ref.c
@@ -58,7 +58,7 @@
static const char *exec_name;
-void usage_exit() {
+void usage_exit(void) {
fprintf(stderr, "Usage: %s <width> <height> <infile> <outfile> <frame>\n",
exec_name);
exit(EXIT_FAILURE);