Buffers: compile error for missing MAX

Author: pschatzmann

src/utils/Buffers.h

@@ -7,6 +7,9 @@
 
 #ifndef MIN
 #  define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+
+#ifndef MAX
 #  define MAX(a,b) (((a)>(b))?(a):(b))
 #endif