Use __VA_ARGS__ when in clang static analyzer.

Clang static analyzer can optimize out if (false) ...
and report unused variables in __VA_ARGS__.

Bug: 111614304
Test: make with WITH_TIDY=1
Change-Id: I214ced736230fda847031fd4eee23015fd988ffc
1 file changed
tree: 105c006260f826f193687d7857c167aa12e47ea5
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/