Fix memory exception.

src/AddIns/Debugger/Debugger.AddIn/Pads/Commands/MemoryPadCommands.cs

@@ -119,7 +119,7 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		{
 			if (this.pad != null && this.comboBox != null) {
 				pad.DisplayByteSize = Convert.ToByte(this.comboBox.SelectedValue);
-				pad.ChangeByteDisplay();
+				pad.DisplayMemory();
 			}
 			base.Run();
 		}

src/AddIns/Debugger/Debugger.AddIn/Pads/MemoryPad.cs

@@ -188,10 +188,10 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 				return;
 			}
 			
-			ChangeByteDisplay();
+			DisplayMemory();
 		}
 
-		public void ChangeByteDisplay()
+		public void DisplayMemory()
 		{
 			if (memory == null || memory.Length == 0)
 				return;

src/AddIns/Debugger/Debugger.Core/Interop/NativeMethods.cs

@@ -169,9 +169,9 @@ namespace Debugger.Interop
 		public static byte[] ReadProcessMemory(this Process process, long startAddress, long size)
 		{
 			IntPtr openedProcess = IntPtr.Zero;
-			byte[] temp = new byte[size];
-			
+			byte[] temp = null;
 			try {
+				temp = new byte[size];
 				openedProcess = OpenProcess(ProcessAccessFlags.All, false, (int)process.Id);
 
 				int outSize;