[main] make keyboard removal idempotent

diff --git a/src/main.c b/src/main.c
index 3b27edff2be52ee2b43c462fd0f67866a1e298a8..47b6200471d22aaa29b0c7c4b09362867c7fc9f9 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -553,9 +553,12 @@ remove_displays_and_keyboard (state_t *state)
       node = next_node;
     }
 
-  ply_keyboard_stop_watching_for_input (state->keyboard);
-  ply_keyboard_free (state->keyboard);
-  state->keyboard = NULL;
+  if (state->keyboard != NULL)
+    {
+      ply_keyboard_stop_watching_for_input (state->keyboard);
+      ply_keyboard_free (state->keyboard);
+      state->keyboard = NULL;
+    }
 }
 
 static void