Ignore wasm in process termination tests

src/test/ui/process-termination/process-termination-blocking-io.rs

@@ -2,6 +2,7 @@
 // https://github.com/fortanix/rust-sgx/issues/109
 
 // run-pass
+// ignore-wasm no threads support
 
 use std::{net::TcpListener, sync::mpsc, thread};
 

src/test/ui/process-termination/process-termination-simple.rs

@@ -1,6 +1,7 @@
 // program should terminate when std::process::exit is called from any thread
 
 // run-pass
+// ignore-wasm no threads support
 
 use std::{process, thread};