fix: hex number formatting width

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>

examples/jacket_midi_print_ringbuffer.nim

@@ -67,17 +67,20 @@ proc midiEventPrinterProc() {.thread.} =
 
     dataReadyLock.acquire()
 
-    while not exitLoop:
+    while true:
         while not exitLoop and ringbufferReadSpace(rb) >= 4:
             var read = cast[int](ringbufferRead(rb, cast[cstring](recvBuf.addr), 4))
 
             if recvBuf[0] <= 3:
                 for i in 0..<recvBuf[0].int:
-                    stdout.write(fmt"{recvBuf[i+1]:#02X} ")
+                    stdout.write(fmt"0x{recvBuf[i+1]:02X} ")
 
                 stdout.write("\n")
                 stdout.flushFile()
 
+        if exitLoop:
+            break
+
         dataReady.wait(dataReadyLock)
 
     dataReadyLock.release()

examples/jacket_midi_print_threading.nim

@@ -67,7 +67,7 @@ proc midiEventPrinterProc() =
             break
         elif event.size <= 3:
             for i in 0..<event.size:
-                stdout.write(fmt"{event.buffer[i]:#02X} ")
+                stdout.write(fmt"0x{event.buffer[i]:02X} ")
 
             stdout.write("\n")
             stdout.flushFile()