Avoid "const-correct" warning from MSVC.

diff --git a/src/pcre2test.c b/src/pcre2test.c
index 100e1d2..d437e0e 100644
--- a/src/pcre2test.c
+++ b/src/pcre2test.c
@@ -3850,8 +3850,8 @@
 
 if ((pat_patctl.control & CTL_INFO) != 0)
   {
-  const void *nametable;
-  const uint8_t *start_bits;
+  void *nametable;
+  uint8_t *start_bits;
   BOOL match_limit_set, recursion_limit_set;
   uint32_t backrefmax, bsr_convention, capture_count, first_ctype, first_cunit,
     hasbackslashc, hascrorlf, jchanged, last_ctype, last_cunit, match_empty,