Add missing skip conditions

mbstring can be built without mbregex support, in which case these
tests would fail.  Thus we add respective skip conditions.

Author: cmb69

ext/mbstring/tests/bug43301.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #43301 (mb_ereg*_replace() crashes when replacement string is invalid PHP expression and 'e' option is used)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+extension_loaded('mbstring') or die('skip mbstring not available');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 

ext/mbstring/tests/bug69151.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #69151 (mb_ereg should reject ill-formed byte sequence)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+extension_loaded('mbstring') or die('skip mbstring not available');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 $str = "\x80";

ext/mbstring/tests/bug72164.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #72164 (Null Pointer Dereference - mb_ereg_replace)
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+extension_loaded('mbstring') or die('skip mbstring not available');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 $var0 = "e";

ext/mbstring/tests/bug72399.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #72399 (Use-After-Free in MBString (search_re))
 --SKIPIF--
-<?php require 'skipif.inc'; ?>
+<?php
+require 'skipif.inc';
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 $var5 = mb_ereg_search_init("","2");

ext/mbstring/tests/bug72402.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #72402: _php_mb_regex_ereg_replace_exec - double free
 --SKIPIF--
-<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
+<?php
+extension_loaded('mbstring') or die('skip mbstring not available');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 function throwit() {

ext/mbstring/tests/bug72691.phpt

@@ -3,6 +3,7 @@ Bug #72691 (mb_ereg_search raises a warning if a match zero-width)
 --SKIPIF--
 <?php
 if (!extension_loaded('mbstring')) die('skip ext/mbstring required');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
 ?>
 --FILE--
 <?php

ext/mbstring/tests/bug72693.phpt

@@ -3,6 +3,7 @@ Bug #72693 (mb_ereg_search increments search position when a match zero-width)
 --SKIPIF--
 <?php
 if (!extension_loaded('mbstring')) die('skip ext/mbstring required');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
 ?>
 --FILE--
 <?php

ext/mbstring/tests/bug72694.phpt

@@ -3,6 +3,7 @@ Bug #72694 (mb_ereg_search_setpos does not accept a string's last position)
 --SKIPIF--
 <?php
 if (!extension_loaded('mbstring')) die('skip ext/mbstring required');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
 ?>
 --FILE--
 <?php

ext/mbstring/tests/bug72710.phpt

@@ -3,6 +3,7 @@ Bug #72710 (`mb_ereg` causes buffer overflow on regexp compile error)
 --SKIPIF--
 <?php
 if (!extension_loaded('mbstring')) die('skip ext/mbstring required');
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
 ?>
 --FILE--
 <?php

ext/mbstring/tests/bug73532.phpt

@@ -1,7 +1,10 @@
 --TEST--
 Bug #73532 (Null pointer dereference in mb_eregi)
 --SKIPIF--
-<?php require 'skipif.inc'; ?>
+<?php
+require 'skipif.inc';
+if (!function_exists('mb_ereg')) die('skip mbregex support not available');
+?>
 --FILE--
 <?php
 var_dump(mb_eregi("a", "\xf5"));