modify programs/*.c to use polarssl_snprintf
diff --git a/programs/ssl/ssl_pthread_server.c b/programs/ssl/ssl_pthread_server.c
index 8c67173..b75464b 100644
--- a/programs/ssl/ssl_pthread_server.c
+++ b/programs/ssl/ssl_pthread_server.c
@@ -30,6 +30,7 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#define polarssl_snprintf   snprintf
 #define polarssl_printf     printf
 #define polarssl_fprintf    fprintf
 #endif
@@ -137,7 +138,7 @@
     memset( &ssl, 0, sizeof( ssl_context ) );
     memset( &ctr_drbg, 0, sizeof( ctr_drbg_context ) );
 
-    snprintf( pers, sizeof(pers), "SSL Pthread Thread %d", thread_id );
+    polarssl_snprintf( pers, sizeof(pers), "SSL Pthread Thread %d", thread_id );
     polarssl_printf( "  [ #%d ]  Client FD %d\n", thread_id, client_fd );
     polarssl_printf( "  [ #%d ]  Seeding the random number generator...\n", thread_id );