#4593 fix the get-active-cpus linux test to work with TOKU_NCPUS closes[t:4593]

git-svn-id: file:///svn/toku/tokudb@40526 c7de825b-a66e-492c-adef-691d508d4ae1

linux/tests/test-active-cpus.c

@@ -14,6 +14,8 @@ static void set_cpuset(cpu_set_t *cpuset, int ncpus) {
 
 int main(void) {
     int r;
+    r = unsetenv("TOKU_NCPUS"); 
+    assert(r == 0);
 
     int max_cpus = sysconf(_SC_NPROCESSORS_ONLN);
     assert(toku_os_get_number_active_processors() == max_cpus);