Do trim $hook_name within add_action() and add_filter() function

[xmic]

To reduce human error within inputting strings in add_action() thus add_filter() hook, a trim must be introduced.

Patch is available, please see attached file.

[xmic]

Add trim to add_filter() function param 1

[johnbillion]

Sorry that this got missed @xmic. I think this has minimal benefit and introduces extra cost, albeit a small one, so I will close this off as something that is not planned. Cheers!