Administration: Combine the styles for <p> and .wp-die-message, instead of duplicating.

This brings some consistency with `_default_wp_die_handler()`, where they are already combined.

Follow-up to [45909].

See #47580.
Built from https://develop.svn.wordpress.org/trunk@48082


git-svn-id: http://core.svn.wordpress.org/trunk@47849 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/common-rtl.css

@@ -305,7 +305,8 @@ q:after {
 	content: none;
 }
 
-p {
+p,
+.wp-die-message {
 	font-size: 13px;
 	line-height: 1.5;
 	margin: 1em 0;
@@ -457,12 +458,6 @@ code {
 	white-space: nowrap;
 }
 
-.wp-die-message {
-	font-size: 13px;
-	line-height: 1.5;
-	margin: 1em 0;
-}
-
 /* .widefat - main style for tables */
 .widefat {
 	border-spacing: 0;

wp-admin/css/common.css

@@ -304,7 +304,8 @@ q:after {
 	content: none;
 }
 
-p {
+p,
+.wp-die-message {
 	font-size: 13px;
 	line-height: 1.5;
 	margin: 1em 0;
@@ -456,12 +457,6 @@ code {
 	white-space: nowrap;
 }
 
-.wp-die-message {
-	font-size: 13px;
-	line-height: 1.5;
-	margin: 1em 0;
-}
-
 /* .widefat - main style for tables */
 .widefat {
 	border-spacing: 0;