freebsd_iflib: Fixes to avoid implicit-function-declaration errors.

No functional change intended.

src/libs/compat/freebsd_iflib/iflib.c

@@ -4529,7 +4529,11 @@ iflib_if_qflush(if_t ifp)
 	 * When ALTQ is enabled, this will also take care of purging the
 	 * ALTQ queue(s).
 	 */
+#ifdef __HAIKU__
+	ifp->if_qflush(ifp);
+#else
 	if_qflush(ifp);
+#endif
 }
 
 #define IFCAP_FLAGS (IFCAP_HWCSUM_IPV6 | IFCAP_HWCSUM | IFCAP_LRO | \

src/libs/compat/freebsd_iflib/nvlist.c

@@ -1463,16 +1463,6 @@ nvlist_add_nvpair(nvlist_t *nvl, const nvpair_t *nvp)
 	nvlist_update_size(nvl, newnvp, 1);
 }
 
-void
-nvlist_add_stringf(nvlist_t *nvl, const char *name, const char *valuefmt, ...)
-{
-	va_list valueap;
-
-	va_start(valueap, valuefmt);
-	nvlist_add_stringv(nvl, name, valuefmt, valueap);
-	va_end(valueap);
-}
-
 void
 nvlist_add_stringv(nvlist_t *nvl, const char *name, const char *valuefmt,
     va_list valueap)
@@ -1493,6 +1483,16 @@ nvlist_add_stringv(nvlist_t *nvl, const char *name, const char *valuefmt,
 	}
 }
 
+void
+nvlist_add_stringf(nvlist_t *nvl, const char *name, const char *valuefmt, ...)
+{
+	va_list valueap;
+
+	va_start(valueap, valuefmt);
+	nvlist_add_stringv(nvl, name, valuefmt, valueap);
+	va_end(valueap);
+}
+
 void
 nvlist_add_null(nvlist_t *nvl, const char *name)
 {