Updated samples/optflow/motempl.py file to solve 3 issues.

[shaikmoeed]

1) Resolved Syntax error at
line 14: def draw_motion_comp(vis, (x, y, w, h), angle, color):
by adding
line 14: def draw_motion_comp(vis, rect, angle, color):
line 15: x, y, w, h = rect

2) Resolved TypeError: integer argument expected, got float
Changed division to return integer value instead of float value
by changing from / to //.

3) Released cam variable in a proper way by adding .release() method by which program is exiting properly. If .release() method is not added, even after destroying all windows program is not get closed.

[alalek]

As a "bugfix" this patch should go into 3.4 branch first.
We will merge changes from 3.4 into master regularly (weekly/bi-weekly).

So, please:

• change "base" branch of this PR: master => 3.4 (use "Edit" button near PR title)
• rebase your commits from master onto 3.4 branch. For example:
  git rebase -i --onto upstream/3.4 upstream/master
  (check list of your commits, save and quit (Esc + "wq" + Enter)
  where upstream is configured by following this GitHub guide and fetched (git fetch upstream).
• push rebased commits into source branch of your fork (with --force option)

Note: no needs to re-open PR, apply changes "inplace".

[shaikmoeed]

@alalek I have pushed changes to this shaikmoeed:hotfix/samples-motempl-python-update. Can you merge it to 3.4 branch?

[alalek]

Perhaps push operation was failed. Please ensure that you using --force option.

[shaikmoeed]

@alalek Sorry, I'm new to this rebase topic.
Please check now. I have used --force to push my commits.

[alalek]

Well done! Thank you 👍