cmd_workspace_gaps: fix double free on bad amount

This fixes a double free in cmd_workspace_gaps when the amount given is
invalid. The end pointer from strtol is part of the argument and should
not be freed. Freeing the end pointer could result in a double free or
bad free depending on whether or not the end pointer was at the start of
the argument

1 files changed, 0 insertions, 1 deletions

diff --git a/sway/commands/workspace.c b/sway/commands/workspace.c
index c5d6435a..65a3f407 100644
--- a/sway/commands/workspace.c
+++ b/sway/commands/workspace.c
@@ -76,7 +76,6 @@ static struct cmd_results *cmd_workspace_gaps(int argc, char **argv,
         char *end;
         int amount = strtol(argv[gaps_location + 2], &end, 10);
         if (strlen(end)) {
-                free(end);
                 return cmd_results_new(CMD_FAILURE, expected);
         }