[clang-tidy] Generalize HeaderFileExtensions.{h,cpp}. NFC

https://reviews.llvm.org/D75489
diff --git a/clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
index 1e2184e..7403762 100644
--- a/clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
@@ -31,8 +31,8 @@
     : ClangTidyCheck(Name, Context),
       RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
         "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-  if (!utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                        HeaderFileExtensions, ',')) {
+  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                                  HeaderFileExtensions, ',')) {
     llvm::errs() << "Invalid header file extension: "
                  << RawStringHeaderFileExtensions << "\n";
   }