Minor mouse-up event behaviour tweak.

modules/juce_gui_basics/mouse/juce_MouseInputSource.cpp

@@ -136,7 +136,9 @@ public:
         if (buttonState == newButtonState)
             return false;
 
-        setScreenPos (screenPos, time, false);
+        // (avoid sending a spurious mouse-drag when we receive a mouse-up)
+        if (! (isDragging() && ! newButtonState.isAnyMouseButtonDown()))
+            setScreenPos (screenPos, time, false);
 
         // (ignore secondary clicks when there's already a button down)
         if (buttonState.isAnyMouseButtonDown() == newButtonState.isAnyMouseButtonDown())