Code using the macro change to a plain declaration+init of a local
variable.
Also delete includes of <stdint.h> and <stddef.h> from basictypes.h.
Bug: webrtc:6853
Change-Id: I5ffceb449c1bf8f5badb595d5a343a47b0c6deae
Reviewed-on: https://webrtc-review.googlesource.com/78460
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23377}