PL/Perl: Avoid compiler warning from clang

Use SvREFCNT_inc_simple_void() instead of SvREFCNT_inc() to avoid
warning about unused return value.

diff --git a/src/pl/plperl/plperl_helpers.h b/src/pl/plperl/plperl_helpers.h
index 2c17790062b5c5e6bcffde2aff7dabbc20b0461f..6b714e52a14014dbd65ba3a399026a4000ce9b27 100644 (file)
--- a/src/pl/plperl/plperl_helpers.h
+++ b/src/pl/plperl/plperl_helpers.h
@@ -64,7 +64,7 @@ sv2cstr(SV *sv)
        else
                /* increase the reference count so we can just SvREFCNT_dec() it when
                 * we are done */
-               SvREFCNT_inc(sv);
+               SvREFCNT_inc_simple_void(sv);
 
        val = SvPVutf8(sv, len);