Fix segfault when replacing an existing component in a library.

    wxASSERT( aNewComponent != NULL );

    wxASSERT( aNewComponent != NULL );

    wxASSERT( aOldComponent->GetName().CmpNoCase( aNewComponent->GetName() )== 0 );

    wxASSERT( aOldComponent->GetName().CmpNoCase( aNewComponent->GetName() )== 0 );

    /* Remove the old root component.  The component will automatically be removed when all

    /* Remove the old root component.  The component will automatically be deleted

     * it's aliases are deleted.

     * when all it's aliases are deleted.  Do not place any code that accesses

     * aOldComponent inside this loop that gets evaluated after the last alias is

     * removed in RemoveEntry().  Failure to heed this warning will result in a

     * segfault.

     */

     */

    BOOST_FOREACH( LIB_ALIAS* alias, aOldComponent->m_aliases )

    size_t i = aOldComponent->m_aliases.size();

    while( i != 0 )

    {

    {

        RemoveEntry( (CMP_LIB_ENTRY*) alias );

        i -= 1;

        RemoveEntry( (CMP_LIB_ENTRY*) aOldComponent->m_aliases[ i ] );

    }

    }

    LIB_COMPONENT* newCmp = new LIB_COMPONENT( *aNewComponent, this );

    LIB_COMPONENT* newCmp = new LIB_COMPONENT( *aNewComponent, this );

    // Add new aliases to library alias map.

    // Add new aliases to library alias map.

    for( size_t i = 0; i < newCmp->m_aliases.size(); i++ )

    for( i = 0; i < newCmp->m_aliases.size(); i++ )

    {

    {

        aliases[ newCmp->m_aliases[ i ]->GetName() ] = newCmp->m_aliases[ i ];

        aliases[ newCmp->m_aliases[ i ]->GetName() ] = newCmp->m_aliases[ i ];

    }

    }