fixed broken "show message length" (#820)

* fixed broken "show message length"

This should fix #818. Didn't build and don't really know c++ #yolo #pleasereview #kappa

* Update SplitInput.cpp

removed a useless space that was created by copy pasting

src/widgets/splits/SplitInput.cpp

@@ -426,13 +426,13 @@ void SplitInput::editTextChanged()
 
     QString labelText;
 
-    if (text.length() == 0 || getSettings()->showMessageLength)
+    if (text.length() > 0 && getSettings()->showMessageLength)
     {
-        labelText = "";
+        labelText = QString::number(text.length());       
     }
     else
     {
-        labelText = QString::number(text.length());
+        labelText = "";
     }
 
     this->ui_.textEditLength->setText(labelText);