Remove use of builtin comma operator.

Cleanup for upcoming Clang warning -Wcomma.  No functionality change intended.

llvm-svn: 261271
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index b354c90..7f000dc 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -8458,7 +8458,8 @@
       Updates.push_back(Update.get());
       Finals.push_back(Final.get());
     }
-    ++CurInit, ++CurPrivate;
+    ++CurInit;
+    ++CurPrivate;
   }
   Clause.setUpdates(Updates);
   Clause.setFinals(Finals);