modify library/memory_buffer_alloc.c, benchmark.c and the tests main code to use polarssl_exit
diff --git a/programs/test/benchmark.c b/programs/test/benchmark.c
index 0f2993c..675547b 100644
--- a/programs/test/benchmark.c
+++ b/programs/test/benchmark.c
@@ -33,6 +33,7 @@
 #define polarssl_exit       exit
 #define polarssl_printf     printf
 #define polarssl_snprintf   snprintf
+#define polarssl_exit       exit
 #endif
 
 #if defined(POLARSSL_TIMING_C)