game: grenade trail fix

game/server/hl2/grenade_frag.cpp

@@ -155,6 +155,7 @@ void CGrenadeFrag::OnRestore( void )
 void CGrenadeFrag::CreateEffects( void )
 {
 	// Start up the eye glow
+	if( !m_pMainGlow )
 		m_pMainGlow = CSprite::SpriteCreate( "sprites/redglow1.vmt", GetLocalOrigin(), false );
 
 	int nAttachment = LookupAttachment( "fuse" );
@@ -169,6 +170,7 @@ void CGrenadeFrag::CreateEffects( void )
 	}
 
 	// Start up the eye trail
+	if( !m_pGlowTrail )
 		m_pGlowTrail = CSpriteTrail::SpriteTrailCreate( "sprites/bluelaser1.vmt", GetLocalOrigin(), false );
 
 	if ( m_pGlowTrail != NULL )