commitpkg: properly cleanup commit msg file on abort

Use the workdir location which gets cleaned up automatically. Previously
this was leaking tmpfiles if the commitpkg command got aborted after
file creation.

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

src/commitpkg.in

@@ -132,7 +132,8 @@ if [[ -n $(svn status -q) ]]; then
 		svn commit -q -m "${msgtemplate}: ${1}" || die
 		stat_done
 	else
-		msgfile="$(mktemp)"
+		[[ -z ${WORKDIR:-} ]] && setup_workdir
+		msgfile=$(mktemp --tmpdir="${WORKDIR}" commitpkg.XXXXXXXXXX)
 		echo "$msgtemplate" > "$msgfile"
 		if [[ -n $SVN_EDITOR ]]; then
 			$SVN_EDITOR "$msgfile"