From 5ca4b9908ae499bc154b3ee4b64350a0895df27c Mon Sep 17 00:00:00 2001
From: Jonathan Hui <jonhui@nestlabs.com>
Date: Fri, 17 Feb 2017 12:10:00 -0800
Subject: [PATCH] Delete dataset from persistent storage when clearing. (#1332)

---
 src/core/meshcop/dataset.cpp | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/core/meshcop/dataset.cpp b/src/core/meshcop/dataset.cpp
index 43a191655..d2108b4d7 100644
--- a/src/core/meshcop/dataset.cpp
+++ b/src/core/meshcop/dataset.cpp
@@ -440,8 +440,19 @@ ThreadError Dataset::Restore(void)
 
 ThreadError Dataset::Store(void)
 {
-    return otPlatSettingsSet(mInstance, static_cast<uint16_t>(mType == Tlv::kActiveTimestamp ? kKeyActiveDataset :
-                                                              kKeyPendingDataset), mTlvs, mLength);
+    uint16_t key = static_cast<uint16_t>((mType == Tlv::kActiveTimestamp) ? kKeyActiveDataset : kKeyPendingDataset);
+    ThreadError error;
+
+    if (mLength == 0)
+    {
+        error = otPlatSettingsDelete(mInstance, key, 0);
+    }
+    else
+    {
+        error = otPlatSettingsSet(mInstance, key, mTlvs, mLength);
+    }
+
+    return error;
 }
 
 ThreadError Dataset::Set(const Tlv &aTlv)