Make sure that if an additional load event is triggered (such as an iframe...

Make sure that if an additional load event is triggered (such as an iframe being dynamically injected in DOM ready) the ready event isn't triggered twice. Fixes #7352.

src/core.js

@@ -417,18 +417,21 @@ jQuery.extend({
 			// If there are functions bound, to execute
 			if ( readyList ) {
 				// Execute all of them
-				var fn, i = 0;
-				while ( (fn = readyList[ i++ ]) ) {
-					fn.call( document, jQuery );
-				}
+				var fn,
+					i = 0,
+					ready = readyList;
 
 				// Reset the list of functions
 				readyList = null;
-			}
 
-			// Trigger any bound ready events
-			if ( jQuery.fn.trigger ) {
-				jQuery( document ).trigger( "ready" ).unbind( "ready" );
+				while ( (fn = ready[ i++ ]) ) {
+					fn.call( document, jQuery );
+				}
+
+				// Trigger any bound ready events
+				if ( jQuery.fn.trigger ) {
+					jQuery( document ).trigger( "ready" ).unbind( "ready" );
+				}
 			}
 		}
 	},