Fix compilation warnings due to prototype of thread_select

* src/thread.h <int select_func>: Make the 5th and 6th arguments
be 'const'.
* src/process.c [WINDOWSNT]:
* src/w32proc.c: Make the 5th and 6th argument to sys_select be
'const'.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/process.c b/src/process.c
index 7d3cf19d57f..a60814b2386 100644
--- a/src/process.c
+++ b/src/process.c
@@ -138,7 +138,7 @@ static struct rlimit nofile_limit;
 
 #ifdef WINDOWSNT
 extern int sys_select (int, fd_set *, fd_set *, fd_set *,
-                       struct timespec *, sigset_t *);
+                       const struct timespec *, const sigset_t *);
 #endif
 
 /* Work around GCC 4.3.0 bug with strict overflow checking; see