4 files changed, 18 insertions, 8 deletions
diff --git a/core/os/dir_access.cpp b/core/os/dir_access.cpp
index 330a9153ef..e631d6e994 100644
--- a/core/os/dir_access.cpp
+++ b/core/os/dir_access.cpp
@@ -98,22 +98,18 @@ static Error _erase_recursive(DirAccess *da) {
 
 			err = _erase_recursive(da);
 			if (err) {
-				print_line("err recurso " + E->get());
 				da->change_dir("..");
 				return err;
 			}
 			err = da->change_dir("..");
 			if (err) {
-				print_line("no go back " + E->get());
 				return err;
 			}
 			err = da->remove(da->get_current_dir().plus_file(E->get()));
 			if (err) {
-				print_line("no remove dir" + E->get());
 				return err;
 			}
 		} else {
-			print_line("no change to " + E->get());
 			return err;
 		}
 	}
@@ -122,8 +118,6 @@ static Error _erase_recursive(DirAccess *da) {
 
 		Error err = da->remove(da->get_current_dir().plus_file(E->get()));
 		if (err) {
-
-			print_line("no remove file" + E->get());
 			return err;
 		}
 	}
diff --git a/core/os/os.cpp b/core/os/os.cpp
index 97dae05919..e90d714450 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -689,6 +689,18 @@ PoolStringArray OS::get_connected_midi_inputs() {
 	return list;
 }
 
+void OS::open_midi_inputs() {
+
+	if (MIDIDriver::get_singleton())
+		MIDIDriver::get_singleton()->open();
+}
+
+void OS::close_midi_inputs() {
+
+	if (MIDIDriver::get_singleton())
+		MIDIDriver::get_singleton()->close();
+}
+
 OS::OS() {
 	void *volatile stack_bottom;
 
diff --git a/core/os/os.h b/core/os/os.h
index 12c0222ad4..6f9a72d451 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -190,6 +190,8 @@ public:
 	virtual const char *get_audio_driver_name(int p_driver) const;
 
 	virtual PoolStringArray get_connected_midi_inputs();
+	virtual void open_midi_inputs();
+	virtual void close_midi_inputs();
 
 	virtual int get_screen_count() const { return 1; }
 	virtual int get_current_screen() const { return 0; }
diff --git a/core/os/rw_lock.h b/core/os/rw_lock.h
index 9053794c83..3e53300c9f 100644
--- a/core/os/rw_lock.h
+++ b/core/os/rw_lock.h
@@ -56,8 +56,10 @@ class RWLockRead {
 	RWLock *lock;
 
 public:
-	RWLockRead(RWLock *p_lock) {
-		lock = p_lock;
+	RWLockRead(const RWLock *p_lock) {
+		if (p_lock) {
+			lock = const_cast<RWLock *>(p_lock);
+		}
 		if (lock) lock->read_lock();
 	}
 	~RWLockRead() {