ext/standard/tests: 32bit wordwrap tests aren't just for Windows

The test in strings/wordwrap_memory_limit.phpt has a counterpart in
strings/wordwrap_memory_limit_win32.phpt. The two are conditional on
both the OS name and the size of an int (32- versus 64-bits).

A Gentoo Linux user has however reported that the 64-bit test fails on
a 32-bit system, with precisely the error message that the "win32"
test is expecting. I don't have any 32-bit hardware to test myself,
but I think it's reasonable to conclude that the OS name is not an
essential part of the test: it's simply 32- versus 64-bit.

This commit drops the conditionals for the OS name. Now one test will
be run on 32-bit systems, and the other on 64-bit systems, regardless
of the OS name.

Bug: https://bugs.gentoo.org/935382

Author: orlitzky

ext/standard/tests/strings/wordwrap_memory_limit.phpt

@@ -2,7 +2,7 @@
 No overflow should occur during the memory_limit check for wordwrap()
 --SKIPIF--
 <?php
-if (substr(PHP_OS, 0, 3) == 'WIN' && PHP_INT_SIZE == 4) die("skip this test is not for 32bit Windows platforms");
+if (PHP_INT_SIZE == 4) die("skip this test is not for 32bit platforms");
 if (getenv("USE_ZEND_ALLOC") === "0") die("skip Zend MM disabled");
 ?>
 --INI--

ext/standard/tests/strings/wordwrap_memory_limit_win32.phpt renamed to ext/standard/tests/strings/wordwrap_memory_limit_32bit.phpt

@@ -2,7 +2,7 @@
 No overflow should occur during the memory_limit check for wordwrap()
 --SKIPIF--
 <?php
-if (substr(PHP_OS, 0, 3) != 'WIN' || PHP_INT_SIZE != 4) die("skip this test is for 32bit Windows platforms only");
+if (PHP_INT_SIZE != 4) die("skip this test is for 32bit platforms only");
 if (getenv("USE_ZEND_ALLOC") === "0") die("skip Zend MM disabled");
 ?>
 --INI--