Fix whitespace issues.

Change-Id: I69f84ca8b947be8e06005c82526559e3bc8f6387
Reviewed-on: https://code.wireshark.org/review/2861
Reviewed-by: Guy Harris <guy@alum.mit.edu>
(cherry picked from commit c8bcdd52716a308bf3d6cbd131c68a31203f6e0b)
Reviewed-on: https://code.wireshark.org/review/2862