Make a bunch of static arrays const.

llvm-svn: 250641
diff --git a/clang-tools-extra/clang-tidy/modernize/ShrinkToFitCheck.cpp b/clang-tools-extra/clang-tidy/modernize/ShrinkToFitCheck.cpp
index 60b9843..0bcb2a0 100644
--- a/clang-tools-extra/clang-tidy/modernize/ShrinkToFitCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/ShrinkToFitCheck.cpp
@@ -18,7 +18,7 @@
 namespace clang {
 namespace {
 bool isShrinkableContainer(llvm::StringRef ClassName) {
-  static const char *Shrinkables[] = {
+  static const char *const Shrinkables[] = {
     "std::basic_string",
     "std::deque",
     "std::vector"