Merge pull request #59 from rust-embedded/loop_crash_fix

Workaround for loop {} until it is fixed

src/main.rs

@@ -7,10 +7,13 @@ extern crate panic_halt; // you can put a breakpoint on `rust_begin_unwind` to c
 // extern crate panic_itm; // logs messages over ITM; requires ITM support
 // extern crate panic_semihosting; // logs messages to the host stderr; requires a debugger
 
+use cortex_m::asm;
 use cortex_m_rt::entry;
 
 #[entry]
 fn main() -> ! {
+    asm::nop(); // To not have main optimize to abort in release mode, remove when you add code
+
     loop {
         // your code goes here
     }