macosx: prevent a crash by stopping the current input when changing the 'video...

macosx: prevent a crash by stopping the current input when changing the 'video embedded' variable (close #6063)
(cherry picked from commit de932664)

modules/gui/macosx/simple_prefs.m

@@ -35,6 +35,7 @@
 #import "misc.h"
 #import "intf.h"
 #import "AppleRemote.h"
+#import "CoreInteraction.h"
 
 #import <Sparkle/Sparkle.h>                        //for o_intf_last_update_lbl
 
@@ -1053,6 +1054,9 @@ static inline void save_module_list( intf_thread_t * p_intf, id object, const ch
     if( sender == o_intf_nativefullscreen_ckb && [o_intf_nativefullscreen_ckb state] == NSOnState )
         [o_intf_embedded_ckb setState: NSOnState];
 
+    if( sender == o_intf_embedded_ckb )
+        [[VLCCoreInteraction sharedInstance] stop];
+
     b_intfSettingChanged = YES;
 }