[Analysis] 'static' function 'shortenFileName' should be declared 'static inline' (NFC)

llvm-project/llvm/include/llvm/Analysis/DOTGraphTraitsPass.h:89:13:
 error: 'static' function 'shortenFileName' declared in header file should be declared 'static inline' [-Werror,-Wunneeded-internal-declaration]
  static void shortenFileName(std::string &FN, unsigned char len = 250) {

Author: DamonFool

llvm/include/llvm/Analysis/DOTGraphTraitsPass.h

@@ -86,7 +86,7 @@ struct DOTGraphTraitsViewer
   StringRef Name;
 };
 
-static void shortenFileName(std::string &FN, unsigned char len = 250) {
+static inline void shortenFileName(std::string &FN, unsigned char len = 250) {
 
   FN = FN.substr(0, len);