config: free filter list items

 river/Config.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/river/Config.zig b/river/Config.zig
index dddba8a..d5f9041 100644
--- a/river/Config.zig
+++ b/river/Config.zig
@@ -117,6 +117,9 @@ pub fn deinit(self: *Self) void {
     for (self.modes.items) |mode| mode.deinit();
     self.modes.deinit();
 
+    for (self.float_filter.items) |s| util.gpa.free(s);
     self.float_filter.deinit();
+
+    for (self.csd_filter.items) |s| util.gpa.free(s);
     self.csd_filter.deinit();
 }