[clang][StaticAnalyzer] Compilation fix.

An enum was unhandled after landing of D94973. Add the new
OMPCanonicalLoopClass to the list of unhandled cases.

Author: Meinersbur

clang/lib/StaticAnalyzer/Core/ExprEngine.cpp

@@ -1238,6 +1238,7 @@ void ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred,
     case Stmt::SEHExceptStmtClass:
     case Stmt::SEHLeaveStmtClass:
     case Stmt::SEHFinallyStmtClass:
+    case Stmt::OMPCanonicalLoopClass:
     case Stmt::OMPParallelDirectiveClass:
     case Stmt::OMPSimdDirectiveClass:
     case Stmt::OMPForDirectiveClass: