CLEANUP: h1: Fix debug warnings for h1 headers

The wrong method was used to debug the h1m state here. This fixes both
the signature of the h1m method and also fixes the invocation to be
correct.
diff --git a/include/proto/h1.h b/include/proto/h1.h
index 51e8834..4914d51 100644
--- a/include/proto/h1.h
+++ b/include/proto/h1.h
@@ -121,7 +121,7 @@
 }
 
 /* for debugging, reports the HTTP/1 message state name */
-static inline const char *h1m_state_str(enum h1_state msg_state)
+static inline const char *h1m_state_str(enum h1m_state msg_state)
 {
 	switch (msg_state) {
 	case H1_MSG_RQBEFORE:    return "MSG_RQBEFORE";