refactored stress test

examples/stress.cosmo

@@ -9,10 +9,7 @@ class Test
 end
 
 -- stressing the GC
-local i = 0
-while true do
+for (var i = 0; ; i=i+1) do
     var x = Test("Hello world " .. i)
     x.print()
-
-    i = i + 1
 end

src/cvm.c

@@ -108,11 +108,6 @@ CObjString *cosmoV_concat(CState *state, CObjString *strA, CObjString *strB) {
 
 bool cosmoV_execute(CState *state);
 
-typedef enum {
-    CALL_CLOSURE,
-    CALL_CFUNCTION
-} preCallResult;
-
 static inline void callCFunction(CState *state, CosmoCFunction cfunc, int args, int offset) {
     StkPtr savedBase = cosmoV_getTop(state, args);