[client] Pre-cache temp entity data after clearing memory

This is a particularly ancient bug, sort of introduced by rhamph when he
optimized temp entity model handling and later exacerbated by me.
However, I suspect the actual problem is limited to nq as qw's gamedir
handling would have caused the models to be reloaded, but nq doesn't
ever change game directories once running.

include/client/temp_entities.h

@@ -103,6 +103,7 @@ struct msg_s;
 struct entity_s;
 
 void CL_TEnts_Init (void);
+void CL_TEnts_Precache (void);
 void CL_Init_Entity (struct entity_s *ent);
 void CL_ClearTEnts (void);
 void CL_UpdateTEnts (double time, TEntContext_t *ctx);

libs/client/cl_temp_entities.c

@@ -107,12 +107,9 @@ static model_t *cl_spike;
 
 static vec4f_t beam_rolls[360];
 
-static void
-CL_TEnts_Precache (int phase)
+void
+CL_TEnts_Precache (void)
 {
-	if (!phase) {
-		return;
-	}
 	cl_sfx_wizhit = S_PrecacheSound ("wizard/hit.wav");
 	cl_sfx_knighthit = S_PrecacheSound ("hknight/hit.wav");
 	cl_sfx_tink1 = S_PrecacheSound ("weapons/tink1.wav");
@@ -134,11 +131,19 @@ CL_TEnts_Precache (int phase)
 	}
 }
 
+static void
+cl_tents_precache (int phase)
+{
+	if (!phase) {
+		return;
+	}
+	CL_TEnts_Precache ();
+}
+
 void
 CL_TEnts_Init (void)
 {
-	QFS_GamedirCallback (CL_TEnts_Precache);
-	CL_TEnts_Precache (1);
+	QFS_GamedirCallback (cl_tents_precache);
 	for (int i = 0; i < 360; i++) {
 		float       ang = i * M_PI / 360;
 		beam_rolls[i] = (vec4f_t) { sin (ang), 0, 0, cos (ang) };

nq/source/cl_main.c

@@ -300,6 +300,8 @@ CL_ClearState (void)
 	cl.viewstate.weapon_entity = Scene_CreateEntity (cl_world.scene);
 	CL_Init_Entity (cl.viewstate.weapon_entity);
 	r_data->view_model = cl.viewstate.weapon_entity;
+
+	CL_TEnts_Precache ();
 }
 
 /*

qw/source/cl_main.c

@@ -693,6 +693,8 @@ CL_ClearState (void)
 	CL_Init_Entity (cl.viewstate.weapon_entity);
 	r_data->view_model = cl.viewstate.weapon_entity;
 
+	CL_TEnts_Precache ();
+
 	SCR_NewScene (0);
 
 	SZ_Clear (&cls.netchan.message);