lib/: Add missing #include <config.h>

Reviewed-by: Iker Pedrosa <ipedrosa@redhat.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

lib/nss.c

@@ -1,3 +1,5 @@
+#include <config.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <dlfcn.h>

lib/run_part.c

@@ -1,3 +1,5 @@
+#include <config.h>
+
 #include <dirent.h>
 #include <errno.h>
 #include <stdio.h>