AlreadyHave(): only hold lock during mapTransactions access

diff --git a/src/main.cpp b/src/main.cpp
index 449f4bd..5b5062c 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2137,8 +2137,12 @@ bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
     {
     case MSG_TX:
         {
-        LOCK(cs_mapTransactions);
-        return mapTransactions.count(inv.hash) ||
+       bool txInMap = false;
+           {
+            LOCK(cs_mapTransactions);
+           txInMap = (mapTransactions.count(inv.hash) != 0);
+           }
+        return txInMap ||
                mapOrphanTransactions.count(inv.hash) ||
                txdb.ContainsTx(inv.hash);
         }