Fix controls menu not updating weapon model

Q3 updates the weapon model at end of drop weapon animation but
Q3Rally doesn't use animations. So update the weapon model when
triggering the weapon change sound.

engine/code/q3_ui/ui_players.c

@@ -1111,6 +1111,10 @@ void UI_DrawPlayer( float x, float y, float w, float h, playerInfo_t *pi, int ti
 		if( pi->currentWeapon != pi->weapon ) {
 			trap_S_StartLocalSound( weaponChangeSound, CHAN_LOCAL );
 		}
+
+		// Q3 changes weapon model at end of TORSO_DROP animation
+		// but Q3Rally doesn't use it so just change weapon now.
+		UI_PlayerInfo_SetWeapon( pi, pi->weapon );
 	}
 
 	UI_AdjustFrom640( &x, &y, &w, &h );