[clang-format] Fix a TableGen crash on comment after l_paren (#124380)

Fixes #124248.

Author: owenca

clang/lib/Format/TokenAnnotator.cpp

@@ -1115,7 +1115,7 @@ class AnnotatingParser {
       }
       if (!CurrentToken || CurrentToken->isNot(tok::l_paren))
         return false;
-      skipToNextNonComment();
+      next();
       // FIXME: Hack using inheritance to child context
       Contexts.back().IsTableGenBangOpe = true;
       bool Result = parseParens();
@@ -1124,12 +1124,10 @@ class AnnotatingParser {
     }
     // SimpleValue 9: Cond operator
     if (Tok->is(TT_TableGenCondOperator)) {
-      Tok = CurrentToken;
-      skipToNextNonComment();
-      if (!Tok || Tok->isNot(tok::l_paren))
+      if (!CurrentToken || CurrentToken->isNot(tok::l_paren))
         return false;
-      bool Result = parseParens();
-      return Result;
+      next();
+      return parseParens();
     }
     // We have to check identifier at the last because the kind of bang/cond
     // operators are also identifier.

clang/unittests/Format/FormatTestTableGen.cpp

@@ -101,6 +101,9 @@ TEST_F(FormatTestTableGen, BangOperators) {
                "                                  \"zerozero\",\n"
                "                                  true:  // default\n"
                "                                  \"positivepositive\");\n"
+               "  let CondOpe3WithCommentAfterLParen = !cond(\n"
+               "      // comment\n"
+               "      !eq(/* comment */ x, 0): \"zero\");\n"
                "}");
 }