getCustomMappingTableSize() utility function

Author: troyhacks

wled00/FX.h

@@ -904,6 +904,7 @@ class WS2812FX {  // 96 bytes
 
     static WS2812FX* getInstance(void) { return instance; }
     uint32_t* getCustomMappingTable() const { return customMappingTable; } // TroyHacks for doing dumb things
+    uint32_t getCustomMappingTableSize() const { return customMappingTableSize; } // TroyHacks for doing dumb things
 
     void
 #ifdef WLED_DEBUG