Sound Update & Empty Magazine Sprite Fixes #1917

Job	Run time
code-tests (CODE)	4m 53s
map-tests (operation_trebuchet)	2m 2s
code-tests (WEB)	2m 45s
map-tests (slayer)	1m 45s
map-tests (firefight)	1m 52s
map-tests (crusade)	1m 55s
map-tests (stranded)	1m 52s
map-tests (first_contact)	2m 24s
map-tests (ks7_elmsville)	3m 23s
map-tests (ks7_elmsville_spaceodp)	3m 23s
map-tests (base_assault)	2m 11s
map-tests (base_assault_unsc_defend_vs_urf)	2m 15s
map-tests (unsc_achlys)	1m 58s
map-tests (base_assault_neutral_base)	2m 24s
map-tests (base_assault_neutral_base_taurus)	2m 33s
map-tests (geminus_city)	3m 11s
map-tests (geminus_city_urf_active)	3m 22s
map-tests (system_conquest)	8m 37s
	52m 45s

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