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.

diff --git a/regexec.c b/regexec.c
index c2aba47..316bcaf 100644 (file)
--- 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;
 }
 
 /*