changed malloc.h into stdlib.h

alsa.c

@@ -1,6 +1,6 @@
 
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <alsa/asoundlib.h> 
 #include "alsa.h"
 

pcm.c

@@ -1,7 +1,7 @@
 
 #include <stdint.h>
 #include <string.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include "pcm.h"
 #include "alsa.h"
 #include "wav.h"

wav.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include "wav.h"
 #include "mmap_file.h"