for MTL files, Space in texture path is invalid

[BSarmady]

While exporting textures, some textures are placed in paths that have space in them.

Space is invalid in path for mtl files which then causes the blender addon fail to import the object and if it manage to import it, the texture is not loaded.

I believe this is issue with listfile, however to avoid it I guess it is possible to remove spaces from paths specified in list file before using it.

sample of not loaded texture

newmtl mat_elwynntreetallcomp_01
illum 1
map_Kd ..\..\..\..\..\interface\glues\models\ui_human\elwynntreetallcomp_01.png
newmtl mat_elwynntreetallcanopy_new01
illum 1
map_Kd ..\..\..\..\generic\human\passive doodads\stormwind\elwynntreetallcanopy_new01.png

textures in List file with space in their name