[dsymutil] Remove extra semicolon. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242894 91177308-0d34-0410-b5e6-96231b3b80d8

tools/dsymutil/DwarfLinker.cpp

@@ -527,7 +527,7 @@ StringRef NonRelocatableStringpool::internString(StringRef S) {
   std::pair<uint32_t, StringMapEntryBase *> Entry(0, nullptr);
   auto InsertResult = Strings.insert(std::make_pair(S, Entry));
   return InsertResult.first->getKey();
-};
+}
 
 /// \brief The Dwarf streaming logic
 ///