[clang] [clang-format] Fix crash involving array designators (PR #77045)

[Owen Pan via cfe-commits]

================
@@ -2315,6 +2315,8 @@ bool UnwrappedLineParser::tryToParseLambdaIntroducer() {
     if (Next->is(tok::greater))
       return false;
   }
+  if (tok::isLiteral(FormatTok->Tok.getKind()))
+    return false;
----------------
owenca wrote:

You are right! Then how about the following?
```
  if (FormatTok->is(tok::l_square) || tok::isLiteral(FormatTok->Tok.getKind()))
```
The main point is to return as early as possible.

https://github.com/llvm/llvm-project/pull/77045