ps.map: add missing headers

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@45798 15284696-431f-4ddb-bdfa-cd5b030d7da7

ps/ps.map/r_info.c

@@ -5,6 +5,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <grass/colors.h>
 #include <grass/glocale.h>
 #include "map_info.h"
 #include "clr.h"

ps/ps.map/r_vlegend.c

@@ -5,6 +5,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <grass/colors.h>
 #include <grass/glocale.h>
 #include "vector.h"
 #include "local_proto.h"