Sound Update & Empty Magazine Sprite Fixes #1918

Job	Run time
code-tests (CODE)	4m 44s
map-tests (operation_trebuchet)	1m 56s
code-tests (WEB)	2m 57s
map-tests (slayer)	1m 46s
map-tests (firefight)	1m 54s
map-tests (crusade)	1m 44s
map-tests (stranded)	1m 45s
map-tests (first_contact)	2m 19s
map-tests (ks7_elmsville)	3m 27s
map-tests (ks7_elmsville_spaceodp)	3m 27s
map-tests (base_assault)	2m 8s
map-tests (base_assault_unsc_defend_vs_urf)	2m 23s
map-tests (unsc_achlys)	1m 50s
map-tests (base_assault_neutral_base)	2m 15s
map-tests (base_assault_neutral_base_taurus)	2m 20s
map-tests (geminus_city)	3m 17s
map-tests (geminus_city_urf_active)	3m 14s
map-tests (system_conquest)	8m 5s
	51m 31s

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