cleared some variables in constructors and got rid of an unnecessary constructor

include/libtorrent/file_pool.hpp

@@ -73,7 +73,7 @@ namespace libtorrent
 
 		struct lru_file_entry
 		{
-			lru_file_entry(): last_use(time_now()) {}
+			lru_file_entry(): key(0), last_use(time_now()), mode(0) {}
 			mutable boost::intrusive_ptr<file> file_ptr;
 			void* key;
 			ptime last_use;

include/libtorrent/policy.hpp

@@ -60,7 +60,7 @@ namespace libtorrent
 	// min value is 0, max value is 16775168
 	struct ufloat16
 	{
-		ufloat16() {}
+		ufloat16():m_val(0) {}
 		ufloat16(int v)
 		{ *this = v; }
 		operator int()

src/bt_peer_connection.cpp

@@ -125,6 +125,7 @@ namespace libtorrent
 		m_in_constructor = false;
 		m_encrypted_bytes = 0;
 #endif
+		memset(m_reserved_bits, 0, sizeof(m_reserved_bits));
 	}
 
 	bt_peer_connection::bt_peer_connection(
@@ -176,6 +177,7 @@ namespace libtorrent
 		m_in_constructor = false;
 		m_encrypted_bytes = 0;
 #endif
+		memset(m_reserved_bits, 0, sizeof(m_reserved_bits));
 	}
 
 	void bt_peer_connection::start()

src/policy.cpp

@@ -1532,9 +1532,6 @@ namespace libtorrent
 	}
 #endif // TORRENT_DEBUG
 
-	policy::peer::peer()
-	{}
-
 	policy::peer::peer(boost::uint16_t port, bool conn, int src)
 		: prev_amount_upload(0)
 		, prev_amount_download(0)