fixed fuzzing crash

/home/user/CLionProjects/cppcheck-rider/lib/tokenize.cpp:2540:44: runtime error: member call on null pointer of type 'Token'
    #0 0x5ec589e5f40f in (anonymous namespace)::setScopeInfo(Token*, (anonymous namespace)::ScopeInfo3**, bool) /home/user/CLionProjects/cppcheck-rider/lib/tokenize.cpp:2540:44
    #1 0x5ec589e5505d in Tokenizer::simplifyUsing() /home/user/CLionProjects/cppcheck-rider/lib/tokenize.cpp:2900:17
    #2 0x5ec589e6fd25 in Tokenizer::simplifyTokenList1(char const*) /home/user/CLionProjects/cppcheck-rider/lib/tokenize.cpp:5671:12
    #3 0x5ec589e68681 in Tokenizer::simplifyTokens1(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) /home/user/CLionProjects/cppcheck-rider/lib/tokenize.cpp:3371:14
    #4 0x5ec58a9497ca in CppCheck::checkFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::istream*) /home/user/CLionProjects/cppcheck-rider/lib/cppcheck.cpp:925:32
    #5 0x5ec58a938a97 in CppCheck::check(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) /home/user/CLionProjects/cppcheck-rider/lib/cppcheck.cpp:556:12
    #6 0x5ec589a36f2b in SingleExecutor::check() /home/user/CLionProjects/cppcheck-rider/cli/singleexecutor.cpp:53:29
    #7 0x5ec5899718dc in CppCheckExecutor::check_internal(Settings const&) const /home/user/CLionProjects/cppcheck-rider/cli/cppcheckexecutor.cpp:277:32
    #8 0x5ec58997073d in CppCheckExecutor::check_wrapper(Settings const&) /home/user/CLionProjects/cppcheck-rider/cli/cppcheckexecutor.cpp:216:12
    #9 0x5ec58996f67a in CppCheckExecutor::check(int, char const* const*) /home/user/CLionProjects/cppcheck-rider/cli/cppcheckexecutor.cpp:202:21
    #10 0x5ec58b0802b7 in main /home/user/CLionProjects/cppcheck-rider/cli/main.cpp:91:21
    #11 0x79b410843ccf  (/usr/lib/libc.so.6+0x29ccf) (BuildId: 0865c4b9ba13e0094e8b45b78dfc7a2971f536d2)
    #12 0x79b410843d89 in __libc_start_main (/usr/lib/libc.so.6+0x29d89) (BuildId: 0865c4b9ba13e0094e8b45b78dfc7a2971f536d2)
    #13 0x5ec5897aa9f4 in _start (/home/user/CLionProjects/cppcheck-rider/cmake-build-debug-clang-asan-ubsan/bin/cppcheck+0xf6e9f4) (BuildId: 5c2986a23a9dee600c328566a7967a7eba8652c9)

lib/tokenize.cpp

@@ -2537,7 +2537,7 @@ namespace {
                     tok1 = tok1->previous();
                 if (tok1->previous() && (tok1->strAt(-1) == ")" || tok->strAt(-1) == "}")) {
                     tok1 = tok1->linkAt(-1);
-                    if (Token::Match(tok1->previous(), "throw|noexcept (")) {
+                    if (tok1 && Token::Match(tok1->previous(), "throw|noexcept (")) {
                         tok1 = tok1->previous();
                         while (Token::Match(tok1->previous(), "const|volatile|final|override|&|&&|noexcept"))
                             tok1 = tok1->previous();

test/cli/fuzz-crash/crash-5db88ae1610f5a9782ea78af206f9cd87b6708dd

@@ -0,0 +1 @@
+{for(typedef;);}