all: fixed memleaks; compiler: closures work

main.c

@@ -28,8 +28,13 @@ int main(int argc, char** argv) {
   inp[size] = '\0';
 
   sc_ast* ast = sc_parse(inp);
+  char* out = compile(ast);
 
-  printf("%s\n", compile(ast));
+  printf("%s\n", out);
+
+  free(inp);
+  free(out);
+  sc_ast_free(ast);
 
   return 0;
 }