Fix #14356 fuzzing crash (null-pointer-use) in ReverseTraversal::traverse()

Author: web-flow

lib/tokenize.cpp

@@ -8936,6 +8936,8 @@ void Tokenizer::findGarbageCode() const
             syntaxError(tok);
         if (Token::Match(tok, "& %comp%|&&|%oror%|&|%or%") && tok->strAt(1) != ">")
             syntaxError(tok);
+        if (Token::Match(tok, "%comp%|&&|%oror%|&|%or% }") && tok->str() != ">")
+            syntaxError(tok);
         if (Token::Match(tok, "^ %op%") && !Token::Match(tok->next(), "[>*+-!~]"))
             syntaxError(tok);
         if (Token::Match(tok, ": [)]=]"))

test/cli/fuzz-crash_c/crash-24c217c96d177b8dff4028bce639756d6a8c6088

@@ -0,0 +1 @@
+f(S=n){n*,n&&}