fix compilation warning "this statement may fall through"

dfukalov · dfukalov · commit 0c831244f3eb · 2020-03-17T13:30:05.000+03:00
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
@@ -1419,6 +1419,7 @@ ExprResult Parser::ParseCastExpression(CastParseKind ParseKind,
         Diag(Tok, diag::err_amp_illegal_keyword_dynamiccast);
       }
     }
+    LLVM_FALLTHROUGH;
   case tok::kw_const_cast:
   case tok::kw_reinterpret_cast:
   case tok::kw_static_cast:

Original file line number	Diff line number	Diff line change
`@@ -1419,6 +1419,7 @@ ExprResult Parser::ParseCastExpression(CastParseKind ParseKind,`
`1419`	`1419`	`Diag(Tok, diag::err_amp_illegal_keyword_dynamiccast);`
`1420`	`1420`	`}`
`1421`	`1421`	`}`
	`1422`	`+ LLVM_FALLTHROUGH;`
`1422`	`1423`	`case tok::kw_const_cast:`
`1423`	`1424`	`case tok::kw_reinterpret_cast:`
`1424`	`1425`	`case tok::kw_static_cast:`