The big NULL replacement party part 5.

Right. ' = NULL' would get a lot of these.

src/InputFilter.cpp

@@ -82,7 +82,7 @@ namespace
  * this won't cause timing problems, because the event timestamp is preserved. */
 static Preference<float> g_fInputDebounceTime( "InputDebounceTime", 0 );
 
-InputFilter*	INPUTFILTER = NULL;	// global and accessable from anywhere in our program
+InputFilter*	INPUTFILTER = nullptr;	// global and accessable from anywhere in our program
 
 static const float TIME_BEFORE_REPEATS = 0.375f;