Fix a bug with the alter statement

lower case for device name, when sent from shared ngspice
or from interactive mode.

src/frontend/device.c

@@ -1246,6 +1246,7 @@ com_alter_common(wordlist *wl, int do_model)
     /* in case the altermod command comes from commandline or
        over shared library we have to provide lowercase */
     strtolower(param);
+    strtolower(dev);
 
     words = eqword->wl_next;
     /* skip next line if words is a vector */