Minor issue causing warnings in MT 5.5.0 with texture alpha clipping

[Baigle]

Posting because I have thousands of messages in my debug.txt about these, and I now see them after I allowed warning-level messages in chat. It won't be an issue until they require it to be set in the future.

WARNING[Main]: This warning can be a false-positive if unused pixels in the texture are transparent. However if it is meant to be transparent, you MUST update the nodedef and set use_texture_alpha = "clip"! This compatibility code will be removed in a few releases.

The affected textures are:

"default_leaves.png" of default:leaves_technic_cnc_cylinder "default_leaves.png" of default:leaves_technic_cnc_cylinder_horizontal "default_leaves.png" of default:leaves_technic_cnc_element_cross_double "default_leaves.png" of default:leaves_technic_cnc_element_cross "default_leaves.png" of default:leaves_technic_cnc_element_edge_double "default_leaves.png" of default:leaves_technic_cnc_element_edge "default_leaves.png" of default:leaves_technic_cnc_element_end_double "default_leaves.png" of default:leaves_technic_cnc_element_end "default_leaves.png" of default:leaves_technic_cnc_element_straight_double "default_leaves.png" of default:leaves_technic_cnc_element_straight "default_leaves.png" of default:leaves_technic_cnc_element_t_double "default_leaves.png" of default:leaves_technic_cnc_element_t "default_leaves.png" of default:leaves_technic_cnc_oblate_spheroid "default_leaves.png" of default:leaves_technic_cnc_onecurvededge "default_leaves.png" of default:leaves_technic_cnc_pyramid "default_leaves.png" of default:leaves_technic_cnc_slope_edge "default_leaves.png" of default:leaves_technic_cnc_slope_edge_upsdown "default_leaves.png" of default:leaves_technic_cnc_slope "default_leaves.png" of default:leaves_technic_cnc_slope_inner_edge "default_leaves.png" of default:leaves_technic_cnc_slope_inner_edge_upsdown "default_leaves.png" of default:leaves_technic_cnc_slope_lying "default_leaves.png" of default:leaves_technic_cnc_slope_upsdown "default_leaves.png" of default:leaves_technic_cnc_sphere "default_leaves.png" of default:leaves_technic_cnc_spike "default_leaves.png" of default:leaves_technic_cnc_stick "default_leaves.png" of default:leaves_technic_cnc_twocurvededge

Thank you for your time, fixing this may not be as easy as imagined, based on comments by wsor and S-S-X on another mod about Warning spam.

[SmallJoker]

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