Streaming: Remove any pointer BUrl argument

* There's no need to pass BUrl by pointer, this is
potentially dangerous and leaky without any advantage,
copying is definitely safer.

headers/os/media/MediaFile.h

@@ -72,10 +72,10 @@ public:
 
 	// Additional constructors used to stream data from protocols
 	// supported by the Streamer API
-								BMediaFile(BUrl* url);
-								BMediaFile(BUrl* url, int32 flags);
+								BMediaFile(BUrl url);
+								BMediaFile(BUrl url, int32 flags);
 	// Read-Write streaming constructor
-								BMediaFile(BUrl* destination,
+								BMediaFile(BUrl destination,
 								   const media_file_format* mfi,
 								   int32 flags = 0);
 
@@ -84,7 +84,7 @@ public:
 			status_t			SetTo(const entry_ref* ref);
 			status_t			SetTo(BDataIO* destination);
 	// The streaming equivalent of SetTo
-			status_t			SetTo(BUrl* url);
+			status_t			SetTo(BUrl url);
 
 			status_t			InitCheck() const;
 

headers/private/media/MediaExtractor.h

@@ -40,7 +40,7 @@ struct stream_info {
 class MediaExtractor {
 public:
 								MediaExtractor(BDataIO* source, int32 flags);
-								MediaExtractor(BUrl* url, int32 flags);
+								MediaExtractor(BUrl url, int32 flags);
 
 								~MediaExtractor();
 

headers/private/media/MediaWriter.h

@@ -22,7 +22,7 @@ class MediaWriter {
 public:
 								MediaWriter(BDataIO* target,
 									const media_file_format& fileFormat);
-								MediaWriter(BUrl* url,
+								MediaWriter(BUrl url,
 									const media_file_format& fileFormat);
 								~MediaWriter();
 

headers/private/media/PluginManager.h

@@ -61,7 +61,7 @@ public:
 			void				DestroyEncoder(Encoder* encoder);
 
 			status_t			CreateStreamer(Streamer** streamer,
-									BUrl* url, BDataIO** source);
+									BUrl url, BDataIO** source);
 			void				DestroyStreamer(Streamer* streamer);
 
 private:

headers/private/media/StreamerPlugin.h

@@ -18,7 +18,7 @@ public:
 								Streamer();
 	virtual						~Streamer();
 
-	virtual status_t			Sniff(BUrl* url, BDataIO** source) = 0;
+	virtual status_t			Sniff(BUrl url, BDataIO** source) = 0;
 private:
 	virtual void				_ReservedStreamer1();
 	virtual void				_ReservedStreamer2();