semaphore.c: include limits.h before semaphore.h

else SEM_VALUE_MAX will be undefined

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libpthread/linuxthreads.old/semaphore.c

@@ -15,6 +15,7 @@
 /* Semaphores a la POSIX 1003.1b */
 
 #include <features.h>
+#include <limits.h>
 #include <errno.h>
 #include "pthread.h"
 #include "semaphore.h"

libpthread/linuxthreads/semaphore.c

@@ -15,6 +15,7 @@
 /* Semaphores a la POSIX 1003.1b */
 
 #include <errno.h>
+#include <limits.h>
 #include "pthread.h"
 #include "semaphore.h"
 #include "internals.h"