avoid eval if the row is returned as an array

Author: lukemurray

lib/result.js

@@ -11,7 +11,8 @@ var Result = function(rowMode) {
   this.fields = [];
   this._parsers = [];
   this.RowCtor = null;
-  if(rowMode == "array") {
+  this.rowAsArray = rowMode == "array";
+  if(this.rowAsArray) {
     this.parseRow = this._parseRowAsArray;
   }
 };
@@ -93,7 +94,9 @@ Result.prototype.addFields = function(fieldDescriptions) {
     //results in ~60% speedup on large query result sets
     ctorBody += inlineParser(desc.name, i);
   }
-  this.RowCtor = Function("parsers", "rowData", ctorBody);
+  if(!this.rowAsArray) {
+    this.RowCtor = Function("parsers", "rowData", ctorBody);
+  }
 };
 
 module.exports = Result;