Further mcs 3.2.3 compilation fixes

src/AudioToolbox/AudioFile.cs

@@ -1003,7 +1003,7 @@ public IntPtr GetProperty (AudioFileProperty property, out int size)
 			try {
 				var r = AudioFileGetProperty (handle, property, ref size, buffer);
 				if (r == 0){
-					T t = *(T*) buffer;
+					T t = (T) Marshal.PtrToStructure (buffer, typeof (T));
 					return t;
 				}
 

src/AudioToolbox/AudioQueue.cs

@@ -831,8 +831,7 @@ public IntPtr GetProperty (AudioQueueProperty property, out int size)
 			try {
 				r = AudioQueueGetProperty (handle, property, buffer, ref size);
 				if (r == 0){
-					T result;
-					result = *(T*) buffer;
+					T result = (T) Marshal.PtrToStructure (buffer, typeof (T));
 					return result;
 				}
 
@@ -1057,11 +1056,11 @@ public AudioQueueStatus SetChannelAssignments (params AudioQueueChannelAssignmen
 			}
 		}
 
-		unsafe static IntPtr MarshalArray<T> (ref T[] array, out int totalSize) where T : struct
+		unsafe static IntPtr MarshalArray (ref AudioQueueChannelAssignment[] array, out int totalSize)
 		{
-			int elementSize = sizeof (T);
+			int elementSize = sizeof (AudioQueueChannelAssignment);
 			totalSize = elementSize * array.Length;
-			var array_ptr = (T*) Marshal.AllocHGlobal (totalSize);
+			var array_ptr = (AudioQueueChannelAssignment*) Marshal.AllocHGlobal (totalSize);
 
 			for (int i = 0; i < array.Length; i++)
 				array_ptr [i] = array [i];