r.proj: " " -> NULL

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@44187 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.proj/main.c

@@ -442,7 +442,7 @@ int main(int argc, char **argv)
     G_adjust_Cell_head(&outcellhd, 0, 0);
     Rast_set_output_window(&outcellhd);
 
-    G_message(" ");
+    G_message(NULL);
     G_message(_("Input:"));
     G_message(_("Cols: %d (%d)"), incellhd.cols, icols);
     G_message(_("Rows: %d (%d)"), incellhd.rows, irows);
@@ -452,7 +452,7 @@ int main(int argc, char **argv)
     G_message(_("East: %f (%f)"), incellhd.east, ieast);
     G_message(_("EW-res: %f"), incellhd.ew_res);
     G_message(_("NS-res: %f"), incellhd.ns_res);
-    G_message(" ");
+    G_message(NULL);
 
     G_message(_("Output:"));
     G_message(_("Cols: %d (%d)"), outcellhd.cols, ocols);
@@ -463,7 +463,7 @@ int main(int argc, char **argv)
     G_message(_("East: %f (%f)"), outcellhd.east, oeast);
     G_message(_("EW-res: %f"), outcellhd.ew_res);
     G_message(_("NS-res: %f"), outcellhd.ns_res);
-    G_message(" ");
+    G_message(NULL);
 
     /* open and read the relevant parts of the input map and close it */
     G__switch_env();
@@ -536,7 +536,7 @@ int main(int argc, char **argv)
     Rast_command_history(&history);
     Rast_write_history(mapname, &history);
 
-    G_done_msg(" ");
+    G_done_msg(NULL);
     exit(EXIT_SUCCESS);
 }