use `if let` in panic hook instead of `match`

ctru-rs/src/applets/error.rs

@@ -108,8 +108,7 @@ pub fn set_panic_hook(use_stderr: bool) {
 
         // If we get a `WouldBlock` error, we know that the `Gfx` service has been initialized.
         // Otherwise fallback to printing over stderr.
-        match GFX_ACTIVE.try_lock() {
+        if let Err(TryLockError::WouldBlock) = GFX_ACTIVE.try_lock() {
-            Err(TryLockError::WouldBlock) => {
             if use_stderr {
                 print_to_stderr(name, panic_info);
             }
@@ -123,11 +122,9 @@ pub fn set_panic_hook(use_stderr: bool) {
             unsafe {
                 popup.launch_unchecked();
             }
-            }
+        } else {
-            _ => {
             print_to_stderr(name, panic_info);
         }
-        }
     }));
 
     fn print_to_stderr(name: &str, panic_info: &std::panic::PanicInfo) {