[mlir][OpenMP] Fix assert in processing of dist_schedule

When llvm#152736 was initially merged, the assert that checks for the
chunksize when applying a static-chunked schedule was incorrect.
While it would not have changed the behaviour of the assert, the
string attached to it would have been emitted in cases where it
was simplified.

Author: Stylie777

llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp

@@ -5514,7 +5514,7 @@ OpenMPIRBuilder::InsertPointOrErrorTy OpenMPIRBuilder::applyWorkshareLoop(
   switch (EffectiveScheduleType & ~OMPScheduleType::ModifierMask) {
   case OMPScheduleType::BaseStatic:
   case OMPScheduleType::BaseDistribute:
-    assert(!ChunkSize || !DistScheduleChunkSize &&
+    assert((!ChunkSize || !DistScheduleChunkSize) &&
                              "No chunk size with static-chunked schedule");
     if (IsOrdered && !HasDistSchedule)
       return applyDynamicWorkshareLoop(DL, CLI, AllocaIP, EffectiveScheduleType,