Wrap transaction error callbacks in nextTick

Author: zbarbuto

lib/postgresql.js

@@ -163,10 +163,14 @@ PostgreSQL.prototype.executeSQL = function(sql, params, options, callback) {
   var transaction = options.transaction;
   if (transaction && transaction.connector === this) {
     if (!transaction.connection) {
-      return callback(new Error(g.f('Connection does not exist')));
+      return process.nextTick(function() {
+        callback(new Error(g.f('Connection does not exist')))
+      });
     }
     if (transaction.txId !== transaction.connection.txId) {
-      return callback(new Error(g.f('Transaction is not active')));
+      return process.nextTick(function() {
+        callback(new Error(g.f('Transaction is not active')))
+      });
     }
     debug('Execute SQL within a transaction');
     // Do not release the connection