Corrected wrong order in subtraction for UDP available (#67)

baender · web-flow · commit cff06db5ecfc · 2020-12-09T07:01:01.000+01:00
diff --git a/src/NBUdp.cpp b/src/NBUdp.cpp
@@ -259,7 +259,7 @@ int NBUDP::available()
     return 0;
   }
 
-  return (_rxIndex - _rxSize);
+  return (_rxSize - _rxIndex);
 }
 
 int NBUDP::read()
