libgis: Fixed function name in debug message

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@67989 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/mapset_nme.c

@@ -149,7 +149,7 @@ char **G_get_available_mapsets(void)
     DIR *dir;
     struct dirent *ent;
 
-    G_debug(3, "G_available_mapsets");
+    G_debug(3, "G_get_available_mapsets");
 
     mapsets = G_calloc(alloc, sizeof(char *));