Fix "Close after capture" mode

[bodwok]

Fixed closing the application if "close after capture" mode is set

Steps:

1. Check the box "close after capture"
2. Press on the button "Choose an app to open the capture" or "Upload to Imgur" or "Pin image on the desktop"

Observed Behavior:
The application is closed

Expected Behavior:
The widget will open
When the widget will close the application will be closed

[arjunv]

Update: Issue does not pertain this PR but with master

[ElijahLynn]

After enabling Close after capture option, the only working functionality is saving the screenshot to a file - either through normal Save Image function or using Copy image to clipboard function with Save image after copy option enabled. The results were the same when using Keyboard shortcuts or the GUI buttons.

Functionality Matrix when Close after Capture option is enabled

Action Image Saved Image Copied to Clipboard Image Uploaded Image URL Copied to Clipboard
Save Image ✓
Copy Image to Clipboard ✗
Copy Image to Clipboard + Save Image ✓ ✗
Upload Image ✗
Upload Image + Copy URL to Clipboard ✗ ✗

Is that with this PR or on master?

[borgmanJeremy]

Can you look into why this doesn't fix copying the URL before we merge it?