don't unnecessarily pass image to imPrintf

[N-R-K]

there's no reason for imPrintf to set imlib2's image context. and it was redundant anyways, in all call sites, the proper image was already in context.

also remove image from scrotExecApp() as well, since it's now unused there too.

[daltomi]

Try: scrot -o "test.png" -t 10 -e 'echo bytes:$p'

log

***** Imlib2 Developer Warning ***** : This program is calling the Imlib call: imlib_image_get_width(); With the parameter: image being NULL. Please fix your program. ***** Imlib2 Developer Warning ***** : This program is calling the Imlib call: imlib_image_get_height(); With the parameter: image being NULL. Please fix your program. bytes:0

[N-R-K]

Good catch, thanks! The following diff works:

diff

```diff errx(EXIT_FAILURE, "Saving thumbnail %s failed", filenameThumb); } } + imlib_context_set_image(image); if (opt.exec) scrotExecApp(tm, filenameIM, filenameThumb); - imlib_context_set_image(image); imlib_free_image_and_decache(); free(filenameIM); ```

But maybe the current code is okay too since the imlib_context_set_image inside imPrintf isn't redundant. Thinking about closing the PR and keep things as is.

[N-R-K]

Closing this, having the context set closer to usage is less error prone (even if redundant in some cases).