dante: Fix compile with glibc

When compiled with glibc the config_scan.c wants to use the
cpupolicy2numeric() function which is only available when
HAVE_SCHED_SETSCHEDULER is set. It looks like the wrong define was used here.

This fixes a build problem with glibc in combination with the force
ac_cv_func_sched_setscheduler=no in the OpenWrt CONFIGURE_VARS.

This fixes the following compile error with glibc:
----------------------------------------------------------------------
/bin/ld: config_scan.o: in function `socks_yylex':
dante-1.4.1/sockd/config_scan.l:461: undefined reference to `cpupolicy2numeric'
collect2: error: ld returned 1 exit status
make[5]: *** [Makefile:522: sockd] Error 1

Fixes: aaf46a8fe2 ("dante: disable sched_getscheduler() - not implemented in musl")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit ce1798e915181e6c1f3ba735b254b37b84261303)

package/network/utils/dante/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dante
 PKG_VERSION:=1.4.1
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.inet.no/dante/files/

package/network/utils/dante/patches/210-deactivate-sched_setscheduler.patch

@@ -0,0 +1,53 @@
+When compiled with glibc the config_scan.c wants to use the 
+cpupolicy2numeric() function which is only available when 
+HAVE_SCHED_SETSCHEDULER is set. It looks like the wrong define was used here.
+
+This fixes a build problem with glibc in combination with the force 
+ac_cv_func_sched_setscheduler=no in the OpenWrt CONFIGURE_VARS.
+
+--- a/lib/config_scan.c
++++ b/lib/config_scan.c
+@@ -3891,7 +3891,7 @@ YY_RULE_SETUP
+    SERRX(0);
+ 
+ #else /* !SOCKS_CLIENT */
+-#if HAVE_SCHED_SETAFFINITY
++#if HAVE_SCHED_SETSCHEDULER
+ 
+    BEGIN(0);
+ 
+@@ -3899,9 +3899,9 @@ YY_RULE_SETUP
+       yyerrorx("unknown scheduling policy \"%s\"", yytext);
+ 
+    return SCHEDULEPOLICY;
+-#else /* !HAVE_SCHED_SETAFFINITY */
++#else /* !HAVE_SCHED_SETSCHEDULER */
+    yyerrorx("setting cpu scheduling policy is not supported on this platform");
+-#endif /* !HAVE_SCHED_SETAFFINITY */
++#endif /* !HAVE_SCHED_SETSCHEDULER */
+ 
+ #endif /* SOCKS_CLIENT */
+ }
+--- a/lib/config_scan.l
++++ b/lib/config_scan.l
+@@ -456,7 +456,7 @@ cpu {
+    SERRX(0);
+ 
+ #else /* !SOCKS_CLIENT */
+-#if HAVE_SCHED_SETAFFINITY
++#if HAVE_SCHED_SETSCHEDULER
+ 
+    BEGIN(0);
+ 
+@@ -464,9 +464,9 @@ cpu {
+       yyerrorx("unknown scheduling policy \"%s\"", yytext);
+ 
+    return SCHEDULEPOLICY;
+-#else /* !HAVE_SCHED_SETAFFINITY */
++#else /* !HAVE_SCHED_SETSCHEDULER */
+    yyerrorx("setting cpu scheduling policy is not supported on this platform");
+-#endif /* !HAVE_SCHED_SETAFFINITY */
++#endif /* !HAVE_SCHED_SETSCHEDULER */
+ 
+ #endif /* SOCKS_CLIENT */
+ }