CLEANUP: stconn: rename cs_get_data_name() to sc_get_data_name()

Only used twice to dump stream debug info.
diff --git a/include/haproxy/conn_stream.h b/include/haproxy/conn_stream.h
index ce0e673..5e22fe7 100644
--- a/include/haproxy/conn_stream.h
+++ b/include/haproxy/conn_stream.h
@@ -215,7 +215,11 @@
 		return __objt_check(cs->app);
 	return NULL;
 }
-static inline const char *cs_get_data_name(const struct stconn *cs)
+
+/* Returns the name of the application layer's name for the stconn,
+ * or "NONE" when none is attached.
+ */
+static inline const char *sc_get_data_name(const struct stconn *cs)
 {
 	if (!cs->app_ops)
 		return "NONE";
diff --git a/src/stream.c b/src/stream.c
index 9c10db9..a615c74 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -3317,7 +3317,7 @@
 				      conn_get_ctrl_name(conn),
 				      conn_get_xprt_name(conn),
 				      conn_get_mux_name(conn),
-				      cs_get_data_name(scf),
+				      sc_get_data_name(scf),
 			              obj_type_name(conn->target),
 			              obj_base_ptr(conn->target));
 
@@ -3356,7 +3356,7 @@
 				      conn_get_ctrl_name(conn),
 				      conn_get_xprt_name(conn),
 				      conn_get_mux_name(conn),
-				      cs_get_data_name(scb),
+				      sc_get_data_name(scb),
 			              obj_type_name(conn->target),
 			              obj_base_ptr(conn->target));