Fixed problem with $("div",$("body")) breaking (returning an array, of length one, containing undefined).

src/jquery/jquery.js

@@ -1579,7 +1579,7 @@ jQuery.extend({
 			}
 		}
 
-		var r = [ result[0] ];
+		var r = result.length ? [ result[0] ] : [];
 
 		check: for ( var i = 1, rl = result.length; i < rl; i++ ) {
 			for ( var j = 0; j < i; j++ )

src/selector/selector.js

@@ -101,7 +101,7 @@ jQuery.extend({
 			return [ t ];
 
 		// Make sure that the context is a DOM Element
-		if ( context && context.nodeType == undefined )
+		if ( context && !context.nodeType )
 			context = null;
 
 		// Set the correct context (if none is provided)
@@ -423,4 +423,4 @@ jQuery.extend({
 
 		return r;
 	}
-});
+});