Fix compatibility with MSVC 6.

cl_dll/ammo.cpp

@@ -305,7 +305,7 @@ void CHudAmmo::Reset( void )
 	gHR.Reset();
 
 	//VidInit();
-	wrect_t nullrc = {};
+	wrect_t nullrc = {0,};
 	SetCrosshair( 0, nullrc, 0, 0, 0 ); // reset crosshair
 	m_pWeapon = NULL; // reset last weapon
 }
@@ -539,7 +539,7 @@ int CHudAmmo::MsgFunc_HideWeapon( const char *pszName, int iSize, void *pbuf )
 
 	if( gHUD.m_iHideHUDDisplay & ( HIDEHUD_WEAPONS | HIDEHUD_ALL ) )
 	{
-		wrect_t nullrc = {};
+		wrect_t nullrc = {0,};
 		gpActiveSel = NULL;
 		SetCrosshair( 0, nullrc, 0, 0, 0 );
 	}
@@ -559,7 +559,7 @@ int CHudAmmo::MsgFunc_HideWeapon( const char *pszName, int iSize, void *pbuf )
 //
 int CHudAmmo::MsgFunc_CurWeapon( const char *pszName, int iSize, void *pbuf )
 {
-	wrect_t nullrc = {};
+	wrect_t nullrc = {0,};
 	int fOnTarget = FALSE;
 
 	BEGIN_READ( pbuf, iSize );

dlls/player.cpp

@@ -666,7 +666,7 @@ void CBasePlayer::PackDeadPlayerItems( void )
 	int iWeaponRules;
 	int iAmmoRules;
 	int i;
-	CBasePlayerWeapon *rgpPackWeapons[MAX_WEAPONS] = {};
+	CBasePlayerWeapon *rgpPackWeapons[MAX_WEAPONS] = {0,};
 	int iPackAmmo[MAX_AMMO_SLOTS];
 	int iPW = 0;// index into packweapons array
 	int iPA = 0;// index into packammo array

dlls/scientist.cpp

@@ -467,7 +467,7 @@ void CScientist::StartTask( Task_t *pTask )
 
 			//The enemy can be null here. - Solokiller
 			//Discovered while testing the barnacle grapple on headcrabs with scientists in view.
-			if( m_hEnemy && m_hEnemy->IsPlayer() )
+			if( m_hEnemy != 0 && m_hEnemy->IsPlayer() )
 				PlaySentence( "SC_PLFEAR", 5, VOL_NORM, ATTN_NORM );
 			else
 				PlaySentence( "SC_FEAR", 5, VOL_NORM, ATTN_NORM );