shm: Add C++ protection

Add c++ protection in the relevant places

diff --git a/sys/shm/shmalloc.h b/sys/shm/shmalloc.h
index ab244267fbdfd830ea2493332da36e2b4277aeab..d5aa581ef2ab5f25d6057ee98c5a8103d192f365 100644 (file)
--- a/sys/shm/shmalloc.h
+++ b/sys/shm/shmalloc.h
@@ -46,6 +46,10 @@
 
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct _ShmAllocSpace ShmAllocSpace;
 typedef struct _ShmAllocBlock ShmAllocBlock;