util.c: Correct spelling in rarely compiled code

On Z/OS, this does get compiled, and fails due to the missepllings.

1 files changed, 2 insertions, 2 deletions

diff --git a/util.c b/util.c
index 359f3b6d85..dc2e1bd489 100644
--- a/util.c
+++ b/util.c
@@ -6425,8 +6425,8 @@ Perl_get_c_backtrace(pTHX_ int depth, int skip)
     Safefree(raw_frames);
     return bt;
 #else
-    PERL_UNUSED_ARGV(depth);
-    PERL_UNUSED_ARGV(skip);
+    PERL_UNUSED_ARG(depth);
+    PERL_UNUSED_ARG(skip);
     return NULL;
 #endif
 }