Control.gtk_motion_notify_event: format to understand it

[tmssngr]

The indentation was screwed up, so it was hard to understand the logic.

I also removed the unused assignment to result and the empty else-branch.

[github-actions]

Test Results

  111 files   -  7    111 suites   - 7   11m 29s ⏱️ +22s
4 528 tests  - 55  4 513 ✅  - 34  14 💤  - 22  0 ❌ ±0  1 🔥 +1 
  274 runs   - 56    273 ✅  - 34   1 💤  - 22  0 ❌ ±0 

For more details on these errors, see this check.

Results for commit d383295. ± Comparison against base commit 48e5878.

This pull request removes 56 and adds 1 tests. Note that renamed tests count towards both.

AllWin32Tests ImageWin32Tests ‑ testDisposeDrawnImageBeforeRequestingTargetForOtherZoom
AllWin32Tests ImageWin32Tests ‑ testDrawImageAtDifferentZooms(boolean)[1] true
AllWin32Tests ImageWin32Tests ‑ testDrawImageAtDifferentZooms(boolean)[2] false
AllWin32Tests ImageWin32Tests ‑ testImageDataForDifferentFractionalZoomsShouldBeDifferent
AllWin32Tests ImageWin32Tests ‑ testImageShouldHaveDimesionAsPerZoomLevel
AllWin32Tests ImageWin32Tests ‑ testRetrieveImageDataAtDifferentZooms(boolean)[1] true
AllWin32Tests ImageWin32Tests ‑ testRetrieveImageDataAtDifferentZooms(boolean)[2] false
AllWin32Tests ImageWin32Tests ‑ test_getImageData_fromCopiedImage
AllWin32Tests ImageWin32Tests ‑ test_getImageData_fromImageForImageDataFromImage
AllWin32Tests TestTreeColumn ‑ test_ColumnOrder
…

org.eclipse.swt.tests.junit.Test_org_eclipse_swt_dnd_Clipboard ‑ Unknown test

[jonahgraham]

@tmssngr the failed test on Windows is something new I introduced and the Windows failure is being investigated in #2568