SV_SpawnServer: use malloc for sv.edicts, and only zero it as needed

Previously we were Hunk_Alloc'ing space for 8192 edicts (by default) which zeros all of that memory, this way we only use as much RAM as needed since the unuesd pages aren't dirtied

git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@1286 af15c1b1-3010-417e-b628-4374ebc0bcbd

Quake/host.c

@@ -549,6 +549,7 @@ void Host_ClearMemory (void)
 /* host_hunklevel MUST be set at this point */
 	Hunk_FreeToLowMark (host_hunklevel);
 	cls.signon = 0;
+	if (sv.edicts) free(sv.edicts);	// ericw -- sv.edicts switched to use malloc()
 	memset (&sv, 0, sizeof(sv));
 	memset (&cl, 0, sizeof(cl));
 }

Quake/pr_edict.c

@@ -129,7 +129,7 @@ edict_t *ED_Alloc (void)
 
 	sv.num_edicts++;
 	e = EDICT_NUM(i);
-	ED_ClearEdict (e);
+	memset(e, 0, pr_edict_size); // ericw -- switched sv.edicts to malloc(), so we are accessing uninitialized memory and must fully zero it, not just ED_ClearEdict
 
 	return e;
 }

Quake/sv_main.c

@@ -1332,7 +1332,7 @@ void SV_SpawnServer (const char *server)
 // allocate server memory
 	/* Host_ClearMemory() called above already cleared the whole sv structure */
 	sv.max_edicts = CLAMP (MIN_EDICTS,(int)max_edicts.value,MAX_EDICTS); //johnfitz -- max_edicts cvar
-	sv.edicts = (edict_t *) Hunk_AllocName (sv.max_edicts*pr_edict_size, "edicts");
+	sv.edicts = (edict_t *) malloc (sv.max_edicts*pr_edict_size); // ericw -- sv.edicts switched to use malloc()
 
 	sv.datagram.maxsize = sizeof(sv.datagram_buf);
 	sv.datagram.cursize = 0;
@@ -1348,6 +1348,7 @@ void SV_SpawnServer (const char *server)
 
 // leave slots at start for clients only
 	sv.num_edicts = svs.maxclients+1;
+	memset(sv.edicts, 0, sv.num_edicts*pr_edict_size); // ericw -- sv.edicts switched to use malloc()
 	for (i=0 ; i<svs.maxclients ; i++)
 	{
 		ent = EDICT_NUM(i+1);