clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-constant-array-index*.cpp: Don't assume size_t were unsigned int.

llvm-svn: 255475
diff --git a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-constant-array-index.cpp b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-constant-array-index.cpp
index 7539a1d..8f22302 100644
--- a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-constant-array-index.cpp
+++ b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-constant-array-index.cpp
@@ -1,6 +1,6 @@
 // RUN: %check_clang_tidy %s cppcoreguidelines-pro-bounds-constant-array-index %t
 
-typedef unsigned int size_t;
+typedef __SIZE_TYPE__ size_t;
 
 namespace std {
   template<typename T, size_t N>