Fix liquidv1 sync

A single field wasn't given a positive value which
meant it considers no peg-ins to be valid.

src/chainparams.cpp

@@ -725,6 +725,9 @@ public:
 
         g_con_blockheightinheader = true;
         g_con_elementsmode = true;
+        // TODO: Pick appropriate value for this network.
+        consensus.total_valid_epochs = 2;
+
 
         consensus.genesis_subsidy = 0;
 

src/consensus/params.h

@@ -106,7 +106,8 @@ struct Params {
     // Used to seed the extension space for first dynamic blocks
     std::vector<std::vector<unsigned char>> first_extension_space;
     // Used to allow M-epoch-old peg-in addresses as deposits
-    size_t total_valid_epochs;
+    // default 1 to not break legacy chains implicitly.
+    size_t total_valid_epochs = 1;
 };
 } // namespace Consensus
 

src/pegins.cpp

@@ -492,7 +492,7 @@ std::vector<std::pair<CScript, CScript>> GetValidFedpegScripts(const CBlockIndex
             fedpegscripts.push_back(std::make_pair(GetScriptForDestination(ScriptHash(GetScriptForDestination(WitnessV0ScriptHash(params.fedpegScript)))), params.fedpegScript));
         }
     }
-    // Only return up to the latest two of three possible fedpegscripts, which are enforced
+    // Only return up to the latest total_valid_epochs fedpegscripts, which are enforced
     fedpegscripts.resize(std::min(fedpegscripts.size(), params.total_valid_epochs));
     return fedpegscripts;
 }