From a9280652ce61ddbbecfe16e18e1e464bb1f5d34d Mon Sep 17 00:00:00 2001
From: Daniel Larimer <dlarimer@gmail.com>
Date: Sun, 19 May 2013 15:46:11 -0400
Subject: [PATCH] Fix memory leak on exception in Key::SignCompact

---
 src/key.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/key.cpp b/src/key.cpp
index 74b2797d83b..75114c6afe1 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -328,7 +328,10 @@ bool CKey::SignCompact(uint256 hash, std::vector<unsigned char>& vchSig)
         }
 
         if (nRecId == -1)
+        {
+            ECDSA_SIG_free(sig);
             throw key_error("CKey::SignCompact() : unable to construct recoverable key");
+        }
 
         vchSig[0] = nRecId+27+(fCompressedPubKey ? 4 : 0);
         BN_bn2bin(sig->r,&vchSig[33-(nBitsR+7)/8]);