use declare instead of local

sup

@@ -49,7 +49,7 @@ sup.mktemp() {
 }
 
 sup.scrot() {
-	local tmp_file
+	declare tmp_file
 
 	[[ "$scrot_exec" ]] || { scrot_exec=$(type -P scrot); }
 	[[ "$scrot_exec" ]] || {
@@ -78,7 +78,7 @@ sup.exclude() {
 sup.if_url() { echo "$1" | grep -oE "$cfg_url_regex" &>/dev/null; }
 
 sup.mktemp() {
-	local tmp_file_name tmp_file_name_extra="$2" tmp_dir="$1" 
+	declare tmp_file_name tmp_file_name_extra="$2" tmp_dir="$1" 
 
 	[[ -d "$tmp_dir" ]] || {
 		sup.err "${tmp_dir} does not exist or is not a directory."