[OPENMP] Allow use of macros in OpenMP directives/clauses.

llvm-svn: 236493
diff --git a/clang/lib/Parse/ParsePragma.cpp b/clang/lib/Parse/ParsePragma.cpp
index 96484b4..a8641ef 100644
--- a/clang/lib/Parse/ParsePragma.cpp
+++ b/clang/lib/Parse/ParsePragma.cpp
@@ -1489,7 +1489,7 @@
   Token *Toks = new Token[Pragma.size()];
   std::copy(Pragma.begin(), Pragma.end(), Toks);
   PP.EnterTokenStream(Toks, Pragma.size(),
-                      /*DisableMacroExpansion=*/true, /*OwnsTokens=*/true);
+                      /*DisableMacroExpansion=*/false, /*OwnsTokens=*/true);
 }
 
 /// \brief Handle '#pragma pointers_to_members'