macOS kernel has no limits.h but i386/limits.h (#1172)

diff --git a/SStream.c b/SStream.c
index 269bec5..71d65f2 100644
--- a/SStream.c
+++ b/SStream.c
@@ -4,11 +4,12 @@
 #include <stdarg.h>
 #if defined(CAPSTONE_HAS_OSXKERNEL)
 #include <libkern/libkern.h>
+#include <i386/limits.h>
 #else
 #include <stdio.h>
+#include <limits.h>
 #endif
 #include <string.h>
-#include <limits.h>
 
 #include <capstone/platform.h>