fix compile errors

Author: thomasjball

libs/core/_locales/core-jsdoc-strings.json

@@ -313,6 +313,7 @@
   "control.gcStats": "Get various statistics about the garbage collector (GC)",
   "control.heapDump": "Force GC and halt waiting for debugger to do a full heap dump.",
   "control.heapSnapshot": "Record a heap snapshot to debug memory leaks.",
+  "control.ignoreEvent": "Unregisters an event handler.",
   "control.inBackground": "Schedules code that run in the background.",
   "control.micros": "Gets current time in microseconds. Overflows every ~18 minutes.",
   "control.millis": "Gets the number of milliseconds elapsed since power on.",

libs/core/codal.cpp

@@ -103,7 +103,7 @@ void registerWithDal(int id, int event, Action a, int flags) {
 }
 
 void unregisterFromDal(int id, int event, Action a) {
-    uBit.messageBus.ignore(id, event, dispatchForeground, a);
+    uBit.messageBus.ignore(id, event, dispatchForeground);
     decr(a);
     unregisterGCPtr(a);
 }

libs/core/control.cpp

@@ -1,6 +1,7 @@
 #include "pxt.h"
 
 extern uint32_t __StackTop;
+extern void unregisterFromDal(int id, int event, Action a);
 
 /**
  * How to create the event.

libs/core/shims.d.ts

@@ -420,6 +420,12 @@ declare namespace control {
     //% blockExternalInputs=1 flags.defl=0 shim=control::onEvent
     function onEvent(src: int32, value: int32, handler: () => void, flags?: int32): void;
 
+    /**
+     * Unregisters an event handler.
+     */
+    //% shim=control::ignoreEvent
+    function ignoreEvent(src: int32, value: int32, handler: () => void): void;
+
     /**
      * Gets the value of the last event executed on the bus
      */