[OpenMP] Fix stack overflow for test bug54082.c

When `N` is 1024, `int result[N][N]` is obviously large stack that Windows cannot support...

Fix #60326.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D142684

openmp/runtime/test/parallel/bug54082.c

@@ -6,7 +6,7 @@
 #include <assert.h>
 #include <stdlib.h>
 
-#define N 1024
+#define N 128
 
 int main(int argc, char *argv[]) {
   int errors = 0;