Fix printf() format

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@43984 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/i.landsat.toar/main.c

@@ -374,7 +374,7 @@ int main(int argc, char *argv[])
 		    dn_mode[i] = j;
 		}
 	    }
-	    G_message("... DN = %.2d [%d] : mode %.2d [%d] %s",
+	    G_message("... DN = %.2d [%lu] : mode %.2d [%lu] %s",
 		      dn_dark[i], hist[dn_dark[i]],
 		      dn_mode[i], hist[dn_mode[i]],
 		      hist[255] >