Fix: `sync` command was broken

app/cli.js

@@ -169,7 +169,6 @@ function DuniterCommand(programArgs) {
             logger.error(err.stack || err.message);
           }
           yield ((server && server.disconnect()) || Q()).catch(() => null);
-          throw Error("Exiting");
         });
       })));
 

app/lib/computation/blockchainContext.js

@@ -472,7 +472,7 @@ function BlockchainContext() {
         const msType = type == 'leave' ? 'out' : 'in';
         const field = types[type];
         const mss = block[field];
-        for (const msRaw of mss.length) {
+        for (const msRaw of mss) {
           const ms = Membership.statics.fromInline(msRaw, type == 'leave' ? 'OUT' : 'IN', block.currency);
           ms.membership = msType.toUpperCase();
           ms.written = true;