fix for querying coinbase inputs

app/rpcApi.js

@@ -200,11 +200,19 @@ function getRawTransactions(txids) {
 		for (var i = 0; i < txids.length; i++) {
 			var txid = txids[i];
 			
+			if (txid) {
 				batch.push({
 					method: 'getrawtransaction',
 					params: [ txid, 1 ]
 				});
 			}
+		}
+
+		if (batch.length == 0) {
+			resolve([]);
+
+			return;
+		}
 
 		var results = [];