fix removed virtual oops

Author: neu-rah

library.properties

@@ -1,5 +1,5 @@
 name=ArduinoMenu library
-version=4.20.0
+version=4.20.1
 author=Rui Azevedo, ruihfazevedo@gmail.com
 maintainer=neu-rah, ruihfazevedo@gmail.com
 sentence=Generic menu/interactivity system

src/menuIo.cpp

@@ -44,12 +44,12 @@ menuOut& menuOut::fill(
 
 idx_t menuOut::printRaw(const char* at,idx_t len) {
   trace(MENU_DEBUG_OUT<<"menuOut::printRaw"<<endl);
-  const char* p=(const char*)at;
+  const char* p=at;
   uint8_t ch;
-  for(int n=0;(ch=memByte(p++))&&(len==0||n<len);n++) {
+  for(int n=0;(ch=memByte(at++))&&(len==0||n<len);n++) {
     write(ch);
   }
-  return p-((const char*)at)-1;
+  return at-p-1;
 }
 
 idx_t menuOut::printText(const char* at,idx_t len) {

src/menuIo.h

@@ -76,7 +76,7 @@
         idx_t& top(navNode& nav) const;
         // inline void reset() {panelsList.reset();}
         idx_t printRaw(const char* at,idx_t len);
-        inline idx_t printRaw(const __FlashStringHelper* at,idx_t len) {
+        virtual inline idx_t printRaw(const __FlashStringHelper* at,idx_t len) {
           return printRaw((const char*)at,len);
         }
         idx_t printText(const __FlashStringHelper* at,idx_t len) {return printRaw(at,len);}