Don't use pass by reference to const for cheaply-copied types (bool, char, etc.).

1 files changed, 2 insertions, 2 deletions

diff --git a/src/streams.h b/src/streams.h
index a9668b68bc..ed52c5d52d 100644
--- a/src/streams.h
+++ b/src/streams.h
@@ -241,8 +241,8 @@ public:
     const_reference operator[](size_type pos) const  { return vch[pos + nReadPos]; }
     reference operator[](size_type pos)              { return vch[pos + nReadPos]; }
     void clear()                                     { vch.clear(); nReadPos = 0; }
-    iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
-    void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
+    iterator insert(iterator it, const char x=char()) { return vch.insert(it, x); }
+    void insert(iterator it, size_type n, const char x) { vch.insert(it, n, x); }
     value_type* data()                               { return vch.data() + nReadPos; }
     const value_type* data() const                   { return vch.data() + nReadPos; }