made midi server beos compatible

fix binary compatibility for several classes (I missed this before)
the soft synth loads by default /boot/beos/etc/synth/big_synth.sy (which I locally linked to a General Midi sf2 bank
tested with MidiSynth 1.6 on Haiku


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17864 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/midi2/MidiEndpoint.h

@@ -69,7 +69,7 @@ private:
 	int32 fId;
 	BString fName;	
 	int32 fRefCount;
-	BMessage* fProperties;
+	BMessage *fProperties;
 	bool fIsLocal;
 	bool fIsConsumer;
 	bool fIsRegistered;

headers/os/midi2/MidiProducer.h

@@ -45,10 +45,10 @@ private:
 	bool LockProducer() const;
 	void UnlockProducer() const;
 
+	BList *fConnections;
 	mutable BLocker fLocker;
-	BList fConnections;
-
-	uint32 _reserved[10];
+	
+	uint32 _reserved[2];
 };
 
 class BMidiLocalProducer : public BMidiProducer

headers/os/midi2/MidiRoster.h

@@ -76,7 +76,7 @@ private:
 	status_t SendRequest(BMessage*, BMessage*);
 
 	BPrivate::BMidiRosterLooper* fLooper;
-	BMessenger fServer;
+	BMessenger *fServer;
 
 	uint32 _reserved[16];
 };