drm/ast: fix missing break in switch statement for format->cpp[0] case 4
Currently the switch statement for format->cpp[0] value 4 assigns color_index which is never read again and then falls through to the default case and returns. This looks like a missing break statement bug. Fix this by adding a break statement. Addresses-Coverity: ("Unused value") Fixes: 259d14a7 ("drm/ast: Split ast_set_vbios_mode_info()") Signed-off-by: NColin Ian King <colin.king@canonical.com> Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de> Tested-by: NThomas Zimmermann <tzimmermann@suse.de> Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20200610115804.1132338-1-colin.king@canonical.com
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