ext/pcre/tests: support libpcre2-10.47

In the latest version of libpcre2, the offsets appearing in some
"compilation failed" warnings have increased by one. (I have not
investigated why.) This is causing spurious test failures, so in this
commit we replace the hard-coded offsets by %d to match any integer.

Gentoo-bug: https://bugs.gentoo.org/965018

Author: orlitzky

ext/pcre/tests/grep2.phpt

@@ -21,7 +21,7 @@ var_dump(preg_last_error() == PREG_RECURSION_LIMIT_ERROR);
 
 ?>
 --EXPECTF--
-Warning: preg_grep(): Compilation failed: quantifier does not follow a repeatable item at offset 0 in %sgrep2.php on line %d
+Warning: preg_grep(): Compilation failed: quantifier does not follow a repeatable item at offset %d in %sgrep2.php on line %d
 bool(false)
 array(3) {
   [5]=>

ext/pcre/tests/pcre_extra.phpt

@@ -8,8 +8,8 @@ var_dump(preg_match('/\y/X', '\y'));
 
 ?>
 --EXPECTF--
-Warning: preg_match(): Compilation failed: unrecognized character follows \ at offset 1 in %spcre_extra.php on line 3
+Warning: preg_match(): Compilation failed: unrecognized character follows \ at offset %d in %spcre_extra.php on line 3
 bool(false)
 
-Warning: preg_match(): Compilation failed: unrecognized character follows \ at offset 1 in %spcre_extra.php on line 4
+Warning: preg_match(): Compilation failed: unrecognized character follows \ at offset %d in %spcre_extra.php on line 4
 bool(false)

ext/pcre/tests/split.phpt

@@ -16,7 +16,7 @@ var_dump(preg_split('/\d*/', 'ab2c3u', -1, PREG_SPLIT_NO_EMPTY));
 
 ?>
 --EXPECTF--
-Warning: preg_split(): Compilation failed: quantifier does not follow a repeatable item at offset 0 in %ssplit.php on line %d
+Warning: preg_split(): Compilation failed: quantifier does not follow a repeatable item at offset %d in %ssplit.php on line %d
 bool(false)
 array(3) {
   [0]=>