[Tizen.Applications.DataControl] Fixed a bug for checking if IntPtr is null (#137)

diff --git a/src/Tizen.Applications.DataControl/Tizen.Applications.DataControl/Consumer.cs b/src/Tizen.Applications.DataControl/Tizen.Applications.DataControl/Consumer.cs
index 9619d44..745b8c2 100755 (executable)
--- a/src/Tizen.Applications.DataControl/Tizen.Applications.DataControl/Consumer.cs
+++ b/src/Tizen.Applications.DataControl/Tizen.Applications.DataControl/Consumer.cs
@@ -193,7 +193,7 @@ namespace Tizen.Applications.DataControl
                     Log.Error(LogTag, $"reqId {reqId.ToString()}, error : {error}");
                 }
 
-                if (valueList !=null)
+                if (valueList != IntPtr.Zero)
                 {
                     string[] stringArray;
                     IntPtrToStringArray(valueList, valueCount, out stringArray);