core: fix LOGPIO(): add missing space after 'iofd(...)'

Without a space the logging looks like this:

  iofd(virt-rnc0-0)Cancelling read

Change-Id: I84d305ce6cfc69352a64cb9e42229f88f09893c0
---
M include/osmocom/core/osmo_io.h
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/include/osmocom/core/osmo_io.h b/include/osmocom/core/osmo_io.h
index 6f4dfa8..fa1f9c3 100644
--- a/include/osmocom/core/osmo_io.h
+++ b/include/osmocom/core/osmo_io.h
@@ -55,7 +55,7 @@
  *  \param[in] args arguments to the format string
  */
 #define LOGPIO(iofd, level, fmt, args...) \
-	LOGP(DLIO, level, "iofd(%s)" fmt, iofd->name, ## args)
+	LOGP(DLIO, level, "iofd(%s) " fmt, iofd->name, ## args)
 
 struct osmo_io_fd;
 

