Use internal namespace in VCSBase more consistently

Change-Id: I61de9796aaeb9484b44029c5f1d46e69834a04c3
Reviewed-by: Hugues Delorme <delorme.hugues@fougsys.fr>

src/plugins/vcsbase/submitfilemodel.h

@@ -67,6 +67,6 @@ public:
     unsigned filter(const QStringList &filter, int column);
 };
 
-}
+} // namespace VCSBase
 
 #endif // SUBMITMODEL_H