headers: move __cplusplus ifdefs to the beginning of the file

Make sure further include statements are inside the ifdef.

Signed-off-by: Patrick McHardy <kaber@trash.net>

include/dect/lce.h

@@ -7,8 +7,6 @@
 #ifndef _LIBDECT_DECT_LCE_H
 #define _LIBDECT_DECT_LCE_H
 
-#include <dect/ie.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -18,6 +16,8 @@ extern "C" {
  * @{
  */
 
+#include <dect/ie.h>
+
 struct dect_lce_page_param {
 	struct dect_ie_collection		common;
 	struct dect_ie_portable_identity	*portable_identity;

include/dect/libdect.h

@@ -7,6 +7,10 @@
 #ifndef _LIBDECT_DECT_LIBDECT_H
 #define _LIBDECT_DECT_LIBDECT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <assert.h>
 #include <stdbool.h>
 #include <stdint.h>
@@ -22,10 +26,6 @@
 #include <dect/debug.h>
 #include <list.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 struct dect_handle;
 
 /**