sndio: Fix for some platforms (Linux, for example) that don't define INFTIM. Fixes Bugzilla #3712.
diff --git a/src/audio/sndio/SDL_sndioaudio.c b/src/audio/sndio/SDL_sndioaudio.c
index e74cdce..18c2608 100644
--- a/src/audio/sndio/SDL_sndioaudio.c
+++ b/src/audio/sndio/SDL_sndioaudio.c
@@ -44,6 +44,10 @@
#include "SDL_loadso.h"
#endif
+#ifndef INFTIM
+#define INFTIM -1
+#endif
+
static struct sio_hdl * (*SNDIO_sio_open)(const char *, unsigned int, int);
static void (*SNDIO_sio_close)(struct sio_hdl *);
static int (*SNDIO_sio_setpar)(struct sio_hdl *, struct sio_par *);