[clang] [Clang][OpenMP] Fixing Clang error for metadirective with multiple when clauses and no otherwise (PR #148583)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: None (Ritanya-B-Bharadwaj)

<details>
<summary>Changes</summary>

Fixing - https://github.com/llvm/llvm-project/issues/147336

---
Full diff: https://github.com/llvm/llvm-project/pull/148583.diff


1 Files Affected:

- (modified) clang/lib/Parse/ParseOpenMP.cpp (+1-1) 


``````````diff
diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index aa6a0c61a2c17..5db2f2e2ccf86 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -2704,7 +2704,7 @@ StmtResult Parser::ParseOpenMPDeclarativeOrExecutableDirective(
     // If no match is found and no otherwise clause is present, skip
     // OMP5.2 Chapter 7.4: If no otherwise clause is specified the effect is as
     // if one was specified without an associated directive variant.
-    if (BestIdx == -1 && Idx == 1) {
+    if (BestIdx == -1 && Idx > 0) {
       assert(Tok.is(tok::annot_pragma_openmp_end) &&
              "Expecting the end of the pragma here");
       ConsumeAnnotationToken();

``````````

</details>


https://github.com/llvm/llvm-project/pull/148583