Remove some tautological comparisons involving rlim_t

Clang on macOS warns about these with -Wtautological-compare.  POSIX
guarantees that rlim_t is
unsigned (cf.
http://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/resource.h.html),
so these resource limits can never be negative.

* src/emacs.c (main): Remove tautological comparisons.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/emacs.c b/src/emacs.c
index da8df1bf1c7..08430de6ca7 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -832,7 +832,7 @@ main (int argc, char **argv)
      (https://www.cygwin.com/ml/cygwin/2015-07/msg00096.html).  */
   struct rlimit rlim;
   if (getrlimit (RLIMIT_STACK, &rlim) == 0
-      && 0 <= rlim.rlim_cur && rlim.rlim_cur <= LONG_MAX)
+      && rlim.rlim_cur <= LONG_MAX)
     {
       rlim_t lim = rlim.rlim_cur;
 
@@ -866,7 +866,7 @@ main (int argc, char **argv)
              right thing anyway.  */
           long pagesize = getpagesize ();
           newlim += pagesize - 1;
-          if (0 <= rlim.rlim_max && rlim.rlim_max < newlim)
+          if (rlim.rlim_max < newlim)
             newlim = rlim.rlim_max;
           newlim -= newlim % pagesize;