Update astutils.cpp

Author: chrchr-github

lib/astutils.cpp

@@ -1617,8 +1617,12 @@ bool isSameExpression(bool macro, const Token *tok1, const Token *tok2, const Se
     const Token *followTok1 = tok1, *followTok2 = tok2;
     while (Token::simpleMatch(followTok1, "::"))
         followTok1 = followTok1->astOperand2() ? followTok1->astOperand2() : followTok1->astOperand1();
+    if (!followTok1)
+        followTok1 = tok1; // TODO: remove after #14235 has been fixed
     while (Token::simpleMatch(followTok2, "::"))
         followTok2 = followTok2->astOperand2() ? followTok2->astOperand2() : followTok2->astOperand1();
+    if (!followTok2)
+        followTok2 = tok2;
     if (isSameConstantValue(macro, followTok1, followTok2))
         return true;