Make pcre2posix_test work when the default newline is not LF.

Author: PhilipHazel

ChangeLog

@@ -2,6 +2,14 @@ Change Log for PCRE2 - see also the Git log
 -------------------------------------------
 
 
+Version 10.43 xx-xxx-202x
+-------------------------
+
+1. The test program added by change 2 of 10.42 didn't work when the default 
+newline setting didn't include \n as a newline. One test needed (*LF) to ensure 
+that it worked.
+
+
 Version 10.42 11-December-2022
 ------------------------------
 

src/pcre2posix_test.c

@@ -58,7 +58,7 @@ number of subject strings, terminated by NULL. Some tests share data, but use
 different flags. */
 
 static const char *data0_1[] = { "posix", "lower posix", "upper POSIX", NULL };
-static const char *data2_3[] = { "^(cat|dog)", "catastrophic\ncataclysm",
+static const char *data2_3[] = { "(*LF)^(cat|dog)", "catastrophic\ncataclysm",
   "dogfight", "no animals", NULL };
 static const char *data4[] = { "*badpattern", NULL };