[OpenMP] return empty stmt for `nothing` (#74042)

- `nothing` directive was effecting the `if` block structure which it
should not. So return an empty statement instead of an error statement
while parsing to avoid this.

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index fb7e7a9..da5f660 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -2528,7 +2528,8 @@ StmtResult Parser::ParseOpenMPDeclarativeOrExecutableDirective(
       skipUntilPragmaOpenMPEnd(DKind);
     if (Tok.is(tok::annot_pragma_openmp_end))
       ConsumeAnnotationToken();
-    break;
+    // return an empty statement
+    return StmtEmpty();
   case OMPD_metadirective: {
     ConsumeToken();
     SmallVector<VariantMatchInfo, 4> VMIs;