Opps, added missing curly brace.

Signed-off-by: Roland Häder <roland@mxchange.org>

include/text.php

@@ -1985,7 +1985,7 @@ function is_a_date_arg($s) {
 		$y = date('Y');
 		if ($i <= $y + 1 && strpos($s, '-') == 4) {
 			$m = intval(substr($s, 5));
-			if ($m > 0 && $m <= 12)
+			if ($m > 0 && $m <= 12) {
 				return true;
 			}
 		}