lib: add vector_compact(), use after str splits

* Add function to move all data to the start of a vector by shifting
  over contiguous empty slots
* Use this function to remove empty slots leftover after
  frrstr_filter_vec

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/command.c b/lib/command.c
index edf7348ba7..b7690eac4c 100644
--- a/lib/command.c
+++ b/lib/command.c
@@ -290,10 +290,12 @@ vector cmd_make_strvec(const char *string)
 	for (unsigned int i = 0; i < vector_active(result); i++) {
 		if (strlen(vector_slot(result, i)) == 0) {
 			XFREE(MTYPE_TMP, vector_slot(result, i));
-			vector_remove(result, i);
-			--i;
+			vector_unset(result, i);
 		}
 	}
+
+	vector_compact(result);
+
 	return result;
 }