process: Include missing <signal.h> for raise(3)

Fixes OS X build.

diff --git a/src/libstrongswan/utils/process.c b/src/libstrongswan/utils/process.c
index 23342944772bd06f7edcf8402b27a0c114bb4755..c863bdd108231233493484d73b9fcf10ddfe11a3 100644 (file)
--- a/src/libstrongswan/utils/process.c
+++ b/src/libstrongswan/utils/process.c
@@ -40,6 +40,7 @@ enum {
 #include <unistd.h>
 #include <errno.h>
 #include <sys/wait.h>
+#include <signal.h>
 
 /**
  * Private data of an process_t object.