numparam/xpressn.c, #4/5, use a local 'c' instead of 'dt'

src/frontend/numparam/xpressn.c

@@ -1152,15 +1152,15 @@ evaluate(dico_t *dico, SPICE_DSTRINGPTR qstr_p, char *t, unsigned char mode)
             {
                 j++;
                 lq++;
-                dt = /* ibf->bf[j]; */ entry->sbbase[j];
+                char c = /* ibf->bf[j]; */ entry->sbbase[j];
 
                 if (cpos('3', spice_dstring_value(&dico->option)) <= 0)
-                    dt = upcase(dt); /* spice-2 */
+                    c = upcase(c); /* spice-2 */
 
-                done = (dt == '\"') || (dt < ' ') || (lq > 99);
+                done = (c == '\"') || (c < ' ') || (lq > 99);
 
                 if (!done)
-                    cadd(qstr_p, dt);
+                    cadd(qstr_p, c);
 
             } while (!done);
         }