make menu indicators compile

src/daycare.c

@@ -1,5 +1,6 @@
 #include "global.h"
 #include "pokemon.h"
+#include "battle.h"
 #include "daycare.h"
 #include "string_util.h"
 #include "constants/species.h"
@@ -22,8 +23,6 @@
 #define EGG_MOVES_ARRAY_COUNT           10
 #define EGG_LVL_UP_MOVES_ARRAY_COUNT    50
 
-extern u16 gMoveToLearn;
-
 // text
 extern const u8 gText_MaleSymbol4[];
 extern const u8 gText_FemaleSymbol4[];