c++-ify internal headers too, to be safe

src/ssg-internal.h

@@ -6,10 +6,6 @@
 
 #pragma once
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <stdint.h>
 #include <inttypes.h>
 
@@ -20,6 +16,10 @@ extern "C" {
 #include "ssg.h"
 #include "uthash.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SSG_MAGIC_NR 17321588
 
 /* debug printing macro for SSG */

src/swim-fd/swim-fd-internal.h

@@ -6,12 +6,12 @@
 
 #pragma once
 
+#include <ssg.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <ssg.h>
-
 /* SWIM protocol parameter defaults */
 #define SWIM_DEF_PROTOCOL_PERIOD_LEN    2000.0  /* milliseconds */
 #define SWIM_DEF_SUSPECT_TIMEOUT        5       /* protocol period lengths */

src/swim-fd/swim-fd.h

@@ -6,13 +6,13 @@
 
 #pragma once
 
+#include "ssg.h"
+#include "ssg-internal.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include "ssg.h"
-#include "ssg-internal.h"
-
 /* opaque swim context type */
 typedef struct swim_context swim_context_t;