free some things in runner

src/runner.zig

@@ -115,6 +115,7 @@ pub const Runner = struct {
             "{}_g",
             basename[0..period_idx],
         );
+        defer self.allocator.free(starts_with);
 
         var max: usize = 0;
 
@@ -328,6 +329,8 @@ pub const Runner = struct {
             .Mbeq => blk: {
                 const pos = try cmd.consumePosition();
                 const bands = try cmd.floatArgMany(self.allocator, 2, 15, f32(0));
+                defer self.allocator.free(bands);
+
                 try self.mbeqCmd(pos, bands);
             },