regmatch(): remove remaining reads of reginput

In the remaining place where the value of reginput is used, its value
should always be equal to locinput, so it can be eliminated there.

This is part of a campaign to eliminate the reginput variable.

1 files changed, 3 insertions, 2 deletions

diff --git a/regexec.c b/regexec.c
index c2aba47701..316bcaf44b 100644
--- a/regexec.c
+++ b/regexec.c
@@ -6155,8 +6155,9 @@ no_silent:
     /* clean up; in particular, free all slabs above current one */
     LEAVE_SCOPE(oldsave);
 
-    assert(!result ||  reginput - PL_bostr >= 0);
-    return result ?  reginput - PL_bostr : -1;
+    assert(!result || reginput == locinput);
+    assert(!result ||  locinput - PL_bostr >= 0);
+    return result ?  locinput - PL_bostr : -1;
 }
 
 /*