Shorten PM error language key

qa-include/lang/qa-lang-profile.php

@@ -77,7 +77,7 @@
 		'set_bonus_button' => 'Update bonus',
 		'title' => 'Title:',
 		'user_x' => 'User ^',
-		'user_x_disabled_private_messages' => 'User ^ has disabled private messages.',
+		'user_x_disabled_pms' => 'User ^ has disabled private messages.',
 		'voted_on' => 'Voted on:',
 		'wall_for_x' => 'Wall for ^',
 		'wall_view_more' => 'View more wall posts...',

qa-include/pages/message.php

@@ -75,7 +75,7 @@
 
 	if ($toaccount['flags'] & QA_USER_FLAGS_NO_MESSAGES) {
 		$qa_content['error'] = qa_lang_html_sub(
-			'profile/user_x_disabled_private_messages',
+			'profile/user_x_disabled_pms',
 			sprintf('<a href="%s">%s</a>', qa_path_html('user/' . $handle), qa_html($handle))
 		);
 		return $qa_content;