Added GoSched() to scheduler_cores.go instead of incorrectly calling it in machine_rp2_cores.go

Author: amken3d

src/machine/machine_rp2_cores.go

@@ -28,7 +28,6 @@ func LockCore(core int) {
 		panic("machine: core out of range")
 	}
 	machineLockCore(core)
-	runtime.Gosched()
 }
 
 // UnlockCore unpins the calling goroutine, allowing it to run on any available core.

src/runtime/scheduler_cores.go

@@ -128,6 +128,7 @@ func machineLockCore(core int) {
 		t.Affinity = int8(core)
 	}
 	schedulerLock.Unlock()
+	Gosched()
 }
 
 // machineUnlockCore unpins the current goroutine.