Use printf format specifiers matching the type

src/haeg-sample-buffer.c

@@ -156,7 +156,7 @@ haeg_sample_buffer_read (HaegSampleBuffer *self,
       const gsize copy_len = partial_only ? buf_len : partial_len;
 
       g_debug ("Using %" G_GSIZE_FORMAT
-               " bytes out of partial sample of length %" G_GSIZE_FORMAT,
+               " bytes out of partial sample of length %u",
                copy_len, partial_len);
 
       memcpy (buf, self->partial->data, copy_len);

src/main.c

@@ -182,7 +182,7 @@ transfer_mic (struct haegtesse_data *data)
     {
       return TRUE;
     }
-  g_debug ("Wrote %i bytes (of %u) to TTY port from mic buffer",
+  g_debug ("Wrote %" G_GSIZE_FORMAT" bytes (of %zi) to TTY port from mic buffer",
            written, write_len);
 
   // Update buffer