[csmith-project/creduce] 87f967: avoid parameter name clash for simple_inliner

[Yang Chen <chenyang@cs.utah.edu>]

  Branch: refs/heads/master
  Home:   https://github.com/csmith-project/creduce
  Commit: 87f967404e72209e9039e1c1931aed92a37da365
      https://github.com/csmith-project/creduce/commit/87f967404e72209e9039e1c1931aed92a37da365
  Author: Yang Chen <chenyang@cs.utah.edu>
  Date:   2016-08-03 (Wed, 03 Aug 2016)

  Changed paths:
    M clang_delta/SimpleInliner.cpp
    M clang_delta/SimpleInliner.h

  Log Message:
  -----------
  avoid parameter name clash for simple_inliner

Moritz pointed out that the simple inliner generated invalid
code when a parameter name of the inlined function
exists in an outer scope where the function is inlined.

The issue is now fixed by
(1) first assigning the argument to a temp variable in an outer scope;
(2) then assigning the temp var to the re-generated "parameter";