vgui_support: wscript: don't continue configuration if vgui_supoport can't be built

vgui_support/wscript

@@ -32,7 +32,6 @@ def configure(conf):
 		conf.end_msg('no')
 		Logs.warn('vgui is not supported on this CPU: ' + str(conf.env.DEST_CPU))
 		conf.env.NO_VGUI = True
-		return
 	else:
 		conf.end_msg('yes')
 
@@ -41,7 +40,6 @@ def configure(conf):
 		conf.end_msg('no')
 		Logs.warn('vgui is not supported on this OS: ' + str(conf.env.DEST_OS))
 		conf.env.NO_VGUI = True
-		return
 	else:
 		conf.end_msg('yes')
 
@@ -54,6 +52,9 @@ def configure(conf):
 	else:
 		conf.end_msg('yes')
 
+	if conf.env.NO_VGUI:
+		return
+
 	if conf.options.VGUI_DEV:
 		conf.start_msg('Configuring VGUI by provided path')
 		conf.env.VGUI_DEV = conf.options.VGUI_DEV