Compile fix for NaCL

TBR=mstarzinger@chromium.org
BUG=none
LOG=n

Review URL: https://codereview.chromium.org/228953002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/platform-posix.cc

@@ -96,7 +96,12 @@ intptr_t OS::MaxVirtualMemory() {
   struct rlimit limit;
   int result = getrlimit(RLIMIT_DATA, &limit);
   if (result != 0) return 0;
+#if V8_OS_NACL
+  // The NaCl compiler doesn't like resource.h constants.
+  if (static_cast<int>(limit.rlim_cur) == -1) return 0;
+#else
   if (limit.rlim_cur == RLIM_INFINITY) return 0;
+#endif
   return limit.rlim_cur;
 }