Fix compile errors with NO_STD_FUNCTIONS
diff --git a/library/platform.c b/library/platform.c
index 96f2a9d..a36dc62 100644
--- a/library/platform.c
+++ b/library/platform.c
@@ -72,7 +72,7 @@
 {
     ((void) s);
     ((void) n);
-    ((void) format)
+    ((void) format);
     return( 0 );
 }
 
@@ -148,7 +148,6 @@
 static void platform_exit_uninit( int status )
 {
     ((void) status);
-    return( 0 );
 }
 
 #define POLARSSL_PLATFORM_STD_EXIT   platform_exit_uninit