Remove useless check in touch() task

Author: franzpoeschel

src/IO/ADIOS/ADIOS2IOHandler.cpp

@@ -1817,11 +1817,7 @@ void ADIOS2IOHandlerImpl::deregister(
 void ADIOS2IOHandlerImpl::touch(
     Writable *writable, Parameter<Operation::TOUCH> const &)
 {
-    if (!writable->fileState || !writable->fileState->has_value())
-    {
-        throw error::Internal(
-            "ADIOS2 backend: Tried accessing a file that is not open.");
-    }
+    refreshFileFromParent(writable, false);
     if (access::write(m_handler->m_backendAccess))
     {
         this->m_dirty.emplace(writable->fileState);

src/IO/JSON/JSONIOHandlerImpl.cpp

@@ -1730,11 +1730,7 @@ void JSONIOHandlerImpl::deregister(
 void JSONIOHandlerImpl::touch(
     Writable *writable, Parameter<Operation::TOUCH> const &)
 {
-    if (!writable->fileState || !writable->fileState->has_value())
-    {
-        throw error::Internal(
-            "JSON/TOML backend: Tried accessing a file that is not open.");
-    }
+    refreshFileFromParent(writable, false);
     if (access::write(m_handler->m_backendAccess))
     {
         this->m_dirty.emplace(writable->fileState);