JPEG images with width of 1 cause crash

[ghost]

Godot version:

3.2.4-rc3 (crashes 3.2.3 as well)

OS/device including version:

Windows 10

Issue description:

Godot attempts to import the image and then crashes.

Steps to reproduce:

1. Add jpeg image with width of 1 to project
2. Crash

Minimal reproduction project:

test.zip
Here is a test image:

[qarmin]

Message in terminal

godots: thirdparty/jpeg-compressor/jpgd.h:278: int jpgd::jpeg_decoder::check_sample_buf_ofs(int) const: Assertion `ofs >= 0' failed.

[Riteo]

This looks exactly like #42363. I guess it was supposed to be fixed, but from the looks of it this isn't the case.

[AndyBarcia]

This looks exactly like #42363. I guess it was supposed to be fixed, but from the looks of it this isn't the case.

Sorry if I'm being mistaken. But I think that it does solve the problem. But the pull request wasn't cherrypicked to 3.2.4

In the jpgd.cpp file you can see that in master the line is:

const int half_image_x_size = (m_image_x_size == 1) ? 0 : (m_image_x_size >> 1) - 1;

while in 3.2 the line is:

const int half_image_x_size = (m_image_x_size >> 1) - 1;

I think this needs to be merged

[akien-mga]

Indeed, seems like I missed my cherry-pick of #43441 last time. Now fixed.
So closing as duplicate of #42363.