Remove error event listener before releasing connection back to pool

Signed-off-by: vinod-hansda <[email protected]>

Author: vinod-hansda

lib/postgresql.js

@@ -163,7 +163,11 @@ PostgreSQL.prototype.executeSQL = function(sql, params, options, callback) {
       if (err) debug(err);
       if (data) debugData('%j', data);
       // Release the connection back to the pool.
-      if (releaseCb) releaseCb(err);
+      if (releaseCb) {
+        releaseCb(err);
+        // Remove error event listener to avoid possible memory leak
+        connection.removeAllListeners('error');
+      }
       let result = null;
       if (data) {
         switch (data.command) {