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output: fix wlr_output_preferred_mode fallback 

`mode` points to an invalid pointer (head of the list) when the loop
stops.

Closes: https://github.com/swaywm/sway/issues/4717
This commit is contained in:
Simon Ser 2019-12-15 11:51:47 +01:00 committed by Scott Anderson
parent 7fc58e704a
commit 98cd11c019
1 changed files with 1 additions and 1 deletions
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2
types/wlr_output.c
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@ -406,7 +406,7 @@ struct wlr_output_mode *wlr_output_preferred_mode(struct wlr_output *output) {
} }
// No preferred mode, choose the last one // No preferred mode, choose the last one
return mode; return wl_container_of(output->modes.prev, mode, link);
} }
static void output_state_clear_buffer(struct wlr_output_state *state) { static void output_state_clear_buffer(struct wlr_output_state *state) {