Changed a few VoIP cvars to be latched.

It either doesn't make sense to change these mid-game, or doing so won't work.

code/client/snd_openal.c

@@ -2071,7 +2071,7 @@ qboolean S_AL_Init( soundInterface_t *si )
 	// !!! FIXME: some of these alcCaptureOpenDevice() values should be cvars.
 	// !!! FIXME: add support for capture device enumeration.
 	// !!! FIXME: add some better error reporting.
-	s_alCapture = Cvar_Get( "s_alCapture", "1", CVAR_ARCHIVE );
+	s_alCapture = Cvar_Get( "s_alCapture", "1", CVAR_ARCHIVE | CVAR_LATCH );
 	if (!s_alCapture->integer) {
 		Com_Printf("OpenAL capture support disabled by user ('+set s_alCapture 1' to enable)\n");
 #if USE_MUMBLE