File fix-compilation-with-libav-8.patch of Package spek

Author: Alexander Kojevnikov <alexander@kojevnikov.com>
Description: Fix compilation with Libav 8
Bug-Debian: http://bugs.debian.org/721025

--- a/src/spek-fft.cc
+++ b/src/spek-fft.cc
@@ -17,6 +17,7 @@
  */
 
 #include <math.h>
+#include <stdlib.h>
 
 #define __STDC_CONSTANT_MACROS
 extern "C" {