clang-tidy: replace typedef with using

Found with modernize-use-using

Signed-off-by: Rosen Penev <[email protected]>

Author: neheb

src/patchelf.cc

@@ -54,8 +54,7 @@ static int forcedPageSize = DEFAULT_PAGESIZE;
 static int forcedPageSize = -1;
 #endif
 
-typedef std::shared_ptr<std::vector<unsigned char>> FileContents;
-
+using FileContents = std::shared_ptr<std::vector<unsigned char>>;
 
 #define ElfFileParams class Elf_Ehdr, class Elf_Phdr, class Elf_Shdr, class Elf_Addr, class Elf_Off, class Elf_Dyn, class Elf_Sym, class Elf_Verneed, class Elf_Versym
 #define ElfFileParamNames Elf_Ehdr, Elf_Phdr, Elf_Shdr, Elf_Addr, Elf_Off, Elf_Dyn, Elf_Sym, Elf_Verneed, Elf_Versym
@@ -104,8 +103,8 @@ class ElfFile
 
     bool isExecutable = false;
 
-    typedef std::string SectionName;
-    typedef std::map<SectionName, std::string> ReplacedSections;
+    using SectionName = std::string;
+    using ReplacedSections = std::map<SectionName, std::string>;
 
     ReplacedSections replacedSections;