fix debug line

Lucien Grondin · Lucien Grondin · commit 6afa3338fcd5 · 2021-09-17T15:32:36.000+02:00
diff --git a/bip-0032.sh b/bip-0032.sh
@@ -39,7 +39,7 @@ debug()
 
 bip32()
   if
-    debug "${FUNCNAME[@]} $@"
+    debug "${FUNCNAME[0]} $@"
     local OPTIND OPTARG o
     getopts hp:t o
   then
