rubystub.c: sys/param.h for MAXPATHLEN

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

rubystub.c

@@ -2,6 +2,9 @@
 #if defined HAVE_DLADDR
 #include <dlfcn.h>
 #endif
+#if defined HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
 static void* stub_options(int argc, char **argv);
 #define ruby_options stub_options
 #include <main.c>