Update the NaCl SDK C example to handle removing module from VarFromUtf8

native_client_sdk/src/examples/hello_world_c/hello_world_c.c

Index: native_client_sdk/src/examples/hello_world_c/hello_world_c.c
diff --git a/native_client_sdk/src/examples/hello_world_c/hello_world_c.c b/native_client_sdk/src/examples/hello_world_c/hello_world_c.c
index 939e724db6ce29aa2ce9151580ef0cf752faa273..23a64418034ec32b7b849d8f196f268246f6ce56 100644
--- a/native_client_sdk/src/examples/hello_world_c/hello_world_c.c
+++ b/native_client_sdk/src/examples/hello_world_c/hello_world_c.c
@@ -70,7 +70,7 @@ static char* VarToCStr(struct PP_Var var) {
  */
 static struct PP_Var CStrToVar(const char* str) {
   if (ppb_var_interface != NULL) {
-    return ppb_var_interface->VarFromUtf8(module_id, str, strlen(str));
+    return ppb_var_interface->VarFromUtf8(str, strlen(str));
   }
   return PP_MakeUndefined();
 }