More sd_close() to free memory

Grbl_Esp32/src/WebUI/WebServer.cpp

@@ -1348,6 +1348,7 @@ namespace WebUI {
             s += path;
             s += " does not exist on SD Card\"}";
             _webserver->send(200, "application/json", s);
+            sd_close();
             return;
         }
         if (list_files) {
@@ -1426,6 +1427,7 @@ namespace WebUI {
         _webserver->send(200, "application/json", jsonfile);
         _upload_status = UploadStatusType::NONE;
         set_sd_state(SDCARD_IDLE);
+        sd_close();
     }
 
     //SD File upload with direct access to SD///////////////////////////////
@@ -1543,6 +1545,7 @@ namespace WebUI {
                     if (sdUploadFile) {
                         sdUploadFile.close();
                     }
+                    sd_close();
                     return;
                 }
             }

Grbl_Esp32/src/WebUI/WebSettings.cpp

@@ -737,6 +737,7 @@ namespace WebUI {
         ssd += " Total:" + ESPResponseStream::formatBytes(SD.totalBytes());
         ssd += "]";
         webPrintln(ssd);
+        sd_close();
         return Error::Ok;
     }
 #endif