Replaced const [un]signed long long int& with [un]signed long long int in sevral function's arguments to unify the interface. No performance issue is observed.

Author: redboltz

src/msgpack/type/int.hpp

@@ -173,7 +173,7 @@ inline packer<Stream>& operator<< (packer<Stream>& o, signed long v)
 	{ o.pack_long(v); return o; }
 
 template <typename Stream>
-inline packer<Stream>& operator<< (packer<Stream>& o, const signed long long& v)
+inline packer<Stream>& operator<< (packer<Stream>& o, signed long long v)
 	{ o.pack_long_long(v); return o; }
 
 
@@ -194,7 +194,7 @@ inline packer<Stream>& operator<< (packer<Stream>& o, unsigned long v)
 	{ o.pack_unsigned_long(v); return o; }
 
 template <typename Stream>
-inline packer<Stream>& operator<< (packer<Stream>& o, const unsigned long long& v)
+inline packer<Stream>& operator<< (packer<Stream>& o, unsigned long long v)
 	{ o.pack_unsigned_long_long(v); return o; }
 
 
@@ -214,7 +214,7 @@ inline void operator<< (object& o, signed int v)
 inline void operator<< (object& o, signed long v)
 	{ v < 0 ? o.type = type::NEGATIVE_INTEGER, o.via.i64 = v : o.type = type::POSITIVE_INTEGER, o.via.u64 = v; }
 
-inline void operator<< (object& o, const signed long long& v)
+inline void operator<< (object& o, signed long long v)
 	{ v < 0 ? o.type = type::NEGATIVE_INTEGER, o.via.i64 = v : o.type = type::POSITIVE_INTEGER, o.via.u64 = v; }
 
 
@@ -230,7 +230,7 @@ inline void operator<< (object& o, unsigned int v)
 inline void operator<< (object& o, unsigned long v)
 	{ o.type = type::POSITIVE_INTEGER, o.via.u64 = v; }
 
-inline void operator<< (object& o, const unsigned long long& v)
+inline void operator<< (object& o, unsigned long long v)
 	{ o.type = type::POSITIVE_INTEGER, o.via.u64 = v; }