Format on type with brackets in conditional statements removes empty space

[DonJayamanne]

if (True): changes to if(True):

Yes, that's non-pythonic code, but here's a better example:

x = [(1,1), (2,2)]
if (1,1) in x:        
    print("yay")

Changes to:

x = [(1,1), (2,2)]
if(1,1) in x:        
    print("yay")

[MikhailArkhipov]

Check cases in #1791

[brettcannon]

This also affects while and assert.

[brettcannon]

Might to also need to check await.