use PERL_UNUSED_VAR rather than PERL_UNUSED_DECL

PERL_UNUSED_DECL doesn't do anything under g++, so doing this silences
some g++ warnings.

1 files changed, 5 insertions, 2 deletions

diff --git a/pp_ctl.c b/pp_ctl.c
index cd5033f6aa..199df1fe3c 100644
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -2867,11 +2867,14 @@ PP(pp_goto)
 	    SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
 	    if (CvISXSUB(cv)) {
 		OP* const retop = cx->blk_sub.retop;
-		SV **newsp PERL_UNUSED_DECL;
-		I32 gimme PERL_UNUSED_DECL;
+		SV **newsp;
+		I32 gimme;
 		const SSize_t items = AvFILLp(arg) + 1;
 		SV** mark;
 
+                PERL_UNUSED_VAR(newsp);
+                PERL_UNUSED_VAR(gimme);
+
 		/* put GvAV(defgv) back onto stack */
 		EXTEND(SP, items+1); /* @_ could have been extended. */
 		Copy(AvARRAY(arg), SP + 1, items, SV*);