Simplify ALLOW_UNUSED_LOCAL to use (void)x directly instead of conditionally.

base/compiler_specific.h

Index: base/compiler_specific.h
diff --git a/base/compiler_specific.h b/base/compiler_specific.h
index 0f4c058b3be43963d76c23b0b3b8ec89fc8b3767..34b0c2d7a2913f98c9b7faa10cc5ab7d7640b4c0 100644
--- a/base/compiler_specific.h
+++ b/base/compiler_specific.h
@@ -71,14 +71,13 @@
 
 #endif  // COMPILER_MSVC
 
-
 // Annotate a variable indicating it's ok if the variable is not used.
 // (Typically used to silence a compiler warning when the assignment
 // is important for some other reason.)
 // Use like:
 //   int x = ...;
 //   ALLOW_UNUSED_LOCAL(x);
-#define ALLOW_UNUSED_LOCAL(x) false ? (void)x : (void)0
+#define ALLOW_UNUSED_LOCAL(x) (void)x
 
 // Annotate a typedef or function indicating it's ok if it's not used.
 // Use like: