Fix duplicate variable (introduced by https://trac.osgeo.org/grass/changeset/32675)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@32698 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.topmodel/global.h

@@ -68,7 +68,7 @@ struct params
     int nch;
     /* params.nch's */
     double *d, *Ad_r;
-} params;
+};
 
 /* Input file */
 struct input