evas-3d: fix incorrect reading of .obj file which had an empty line before data in...

evas-3d: fix incorrect reading of .obj file which had an empty line before data in unix encoding.

Summary:
For example of a bug, part of .obj file:
vn 0.5536 -0.7200 -0.4185\n
vn -0.5536 -0.7200 -0.4185\n
\# 239 vertex normals\n
\n
vt 0.4998 0.2618 0.0000\n(lines like this were ignored)
vt 0.5205 0.2550 0.0000\n
vt 0.5249 0.2618 0.0000\n

@fix

Test Plan: Run colorpick example. Before and after this update. ("M15.obj" has fixed places.)

Reviewers: cedric, Hermet, raster

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D2049

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>