patch 8.2.3763: when editing the cmdline a callback may cause a scroll up

Problem:    When editing the command line a FocusLost callback may cause the
            screen to scroll up.
Solution:   Do not redraw at the last line but at the same place where the
            command line was before. (closes #9295)
diff --git a/src/sound.c b/src/sound.c
index e704aed..2f121eb 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -173,7 +173,7 @@
 	delete_sound_callback(scb->scb_callback);
 	vim_free(scb);
     }
-    redraw_after_callback(TRUE);
+    redraw_after_callback(TRUE, FALSE);
 }
 
     static void
@@ -327,7 +327,7 @@
 		    clear_tv(&rettv);
 
 		    delete_sound_callback(p);
-		    redraw_after_callback(TRUE);
+		    redraw_after_callback(TRUE, FALSE);
 
 		}
 	    break;