config: make clock_gettime() check work

The clock_gettime() function is provided by time.h, but the check
includes sched.h. Additionally, the function expects two arguments, but
none are given.

This commit fixes both issues, making the check actually work.

Signed-off-by: Zurab Kvachadze <[email protected]>

Author: BalkanMadman

config

@@ -127,10 +127,10 @@ ngx_feature_test="iconv_open(NULL, NULL);"
 ngx_feature="clock_gettime()"
 ngx_feature_name="NGX_HAVE_CLOCK_GETTIME"
 ngx_feature_run=no
-ngx_feature_incs="#include <sched.h>"
+ngx_feature_incs="#include <time.h>"
 ngx_feature_path=
 ngx_feature_libs=
-ngx_feature_test="clock_gettime()"
+ngx_feature_test="clockid_t c; clock_gettime(c, NULL)"
 . auto/feature
 
 if [ $ngx_found != yes ]; then