Fix race in C++ demo where num_txs_broadcasted ++s before =0s
[ldk-c-bindings] / lightning-c-bindings / src / lightning / ln /
drwxr-xr-x   ..
-rw-r--r-- 83162 chan_utils.rs
-rw-r--r-- 92967 channelmanager.rs
-rw-r--r-- 20389 features.rs
-rw-r--r-- 1703 mod.rs
-rw-r--r-- 252751 msgs.rs
-rw-r--r-- 55620 peer_handler.rs