Use square brackets instead of braces for string access. props hakre, fixes #13900.

git-svn-id: https://develop.svn.wordpress.org/trunk@16340 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/post-template.php

@@ -727,7 +727,7 @@ function the_meta() {
 		echo "<ul class='post-meta'>\n";
 		foreach ( (array) $keys as $key ) {
 			$keyt = trim($key);
-			if ( '_' == $keyt{0} )
+			if ( '_' == $keyt[0] )
 				continue;
 			$values = array_map('trim', get_post_custom_values($key));
 			$value = implode($values,', ');