r.resamp.bspline: fix broken method selector

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@60287 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.resamp.bspline/main.c

@@ -159,7 +159,7 @@ int main(int argc, char *argv[])
     inrast = in_opt->answer;
     outrast = out_opt->answer;
 
-    if (!strcmp(method_opt->answer, "linear"))
+    if (!strcmp(method_opt->answer, "bilinear"))
 	interp_method = P_BILINEAR;
     else
 	interp_method = P_BICUBIC;