host_memory: allow missing MAP_NORESERVE on FreeBSD after 448d4815dece

src/common/host_memory.cpp:408:47: error: use of undeclared identifier 'MAP_NORESERVE'
                MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0);
                                              ^

1 files changed, 4 insertions, 0 deletions

diff --git a/src/common/host_memory.cpp b/src/common/host_memory.cpp
index 3a9ea6eb4..179f6ab11 100644
--- a/src/common/host_memory.cpp
+++ b/src/common/host_memory.cpp
@@ -25,6 +25,10 @@
 #include <unistd.h>
 #include "common/scope_exit.h"
 
+#ifndef MAP_NORESERVE
+#define MAP_NORESERVE 0
+#endif
+
 #endif // ^^^ Linux ^^^
 
 #include <mutex>