project.xml: fix flash macros

Author: joshtynjala

project.xml

@@ -23,7 +23,7 @@
 	-->
 	<haxeflag name="-dce" value="no" if="flash"/>
 
-	<section if="flash !display">
+	<section if="flash" unless="display">
 		<source path="build_macros/flash"/>
 		<haxeflag name="--macro" value="AddFlashPropertyMeta.find('com.adobe.cairngorm')"/>
 	</section>