Clang produces:
"error: code will never be executed [-Werror,-Wunreachable-code]"
For code following an unconditional `break`. But it hints that:
"note: silence by adding parentheses to mark code as explicitly dead"

Hence the dead code can follow an "if((true)) break;" without producing
the warning/error.

Note that in this instance we could have just removed the dead code, but
I wanted to make it clear that this is an example of an unfinished
Reactor function.

Bug: b/178929463
Change-Id: I1ea4dac91877fcede189d09e3953568b2813129e
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/52288Tested-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>