Decrement rocket count only if it was successfully created. (#234)

In addition, make smoke effect and swap sides only if rocket was successfully created.

dlls/apache.cpp

@@ -757,6 +757,9 @@ void CApache::FireRocket( void )
 		break;
 	}
 
+	CBaseEntity *pRocket = CBaseEntity::Create( "hvr_rocket", vecSrc, pev->angles, edict() );
+	if( pRocket )
+	{
 		MESSAGE_BEGIN( MSG_PVS, SVC_TEMPENTITY, vecSrc );
 			WRITE_BYTE( TE_SMOKE );
 			WRITE_COORD( vecSrc.x );
@@ -767,14 +770,13 @@ void CApache::FireRocket( void )
 			WRITE_BYTE( 12 ); // framerate
 		MESSAGE_END();
 
-	CBaseEntity *pRocket = CBaseEntity::Create( "hvr_rocket", vecSrc, pev->angles, edict() );
-	if( pRocket )
 		pRocket->pev->velocity = pev->velocity + gpGlobals->v_forward * 100.0f;
 
 		m_iRockets--;
 
 		side = - side;
 	}
+}
 
 BOOL CApache::FireGun()
 {